A bright aqua blue chair next to a round activity table in a nursery setting, with colourful foam mats and soft toys arranged for early years play.
Aqua blue Postura+ chair with a smooth molded frame, angled legs, and a curved seat, designed for ergonomic support in youth learning spaces.
Aqua blue KI Europe Postura+ chair shown with feature tags including recyclability and UK manufacturing, plus a stack of multicoloured chairs inset.
Sizing chart for KI Europe’s Postura+ Chairs showing age ranges, seat heights, dimensions, and weight for nursery to adult users, with colour-coded feet illustrations.

Overview

Features

Safety & Warranty

Specifications & Dimensions

Delivery & Returns

Product FAQs

Product Overview: Aqua Blue Postura+ Chair (310mm, Ages 4–6)

The Aqua Blue Postura+ 310mm chair combines a bright, pupil-friendly colour with a proven ergonomic shell designed for 4–6 year olds. It is a practical choice for KS1 classrooms, infant schools and SEN spaces that need reliable, easy-care seating built around comfort and posture support.

Sized for Key Stage 1 Comfort

  • 310mm seat height matched to DfE size mark 2 guidance for ages 4–6.
  • Waterfall seat edge helps reduce pressure behind the knees during lessons.
  • Curved backrest gives gentle lumbar support as pupils read, write and draw.

Engineered for Busy Classrooms

  • One-piece injection mould means no loose fittings, screws or joints to maintain.
  • Gas-injected legs add strength without making the chair heavy for staff to move.
  • Stacks up to 12 high to clear floor space quickly for PE, clubs and cleaning.

Comfortable, Cool and Easy to Clean

A built-in ventilation window in the backrest helps pupils stay cool in warm or active classrooms, while the stain-resistant polypropylene shell wipes clean between lessons. The Aqua Blue finish stays bright thanks to a UV filter that supports occasional outdoor use in covered or playground learning areas.

Why Cobolt: Trusted Seating for Education

  • Specialist guidance from a team used to working with schools, MATs and SEN settings.
  • Clear lead times and straightforward communication from enquiry to delivery.
  • UK manufacturing for consistent quality, traceability and reliable replenishment.
  • 20-year warranty that underpins long-term value and budget planning.

Where the Aqua Blue Postura+ Chair Performs Best

The Aqua Blue Postura+ 310mm chair is ideal for KS1 classrooms, infant schools, reading corners, SEN support spaces and high-activity primary environments. Its ergonomic shaping and durable one-piece shell offer a dependable seating solution that supports young learners through every lesson, activity and transition.

Key Features

  • Ergonomic KS1 sizing – the 310mm seat height is purpose-built for children aged 4–6.
  • Seamless one-piece shell – eliminates screws, joins and weak points for long-term reliability.
  • Durable high-impact polymer – made using 30% recycled content for improved sustainability.
  • Reinforced gas-injected legs – deliver added strength for regular stacking and daily movement.
  • Ventilated back window – promotes airflow to help keep pupils cool in active classrooms.
  • Stable anti-rocking base – reduces movement and supports safer everyday classroom use.
  • Easy-clean, stain-resistant surface – ideal for glue, felt tips, messy play and snack time.
  • UV-resistant finish – retains its Aqua Blue colour during occasional outdoor or covered use.
  • Space-efficient stackability – stacks up to 12 high for fast room reconfiguration.
20-year warranty icon
20-year warranty
Free delivery icon
Free UK mainland delivery
UK manufactured icon
UK manufactured
BS EN 1729 compliant icon
BS EN 1729 compliant

The Cobolt Advantage

  • Effortless procurement for schools – clear specifications designed for MATs and primary environments.
  • Education-focused support – our UK-based team understands KS1 layouts, sizing and compliance needs.
  • Long-term cost efficiency – built to last with a 20-year warranty for predictable budgeting.
  • Ready for daily classroom life – lightweight, stackable and robust enough for continuous use.

Safety & Warranty for Aqua Blue Postura+ 310mm Chairs

  • Designed to meet the demands of KS1 classrooms, with safety and stability built into the one-piece shell and leg design.
  • Tested and certified to BS EN 1729–1:2015 for correct educational dimensions and posture support.
  • Complies with BS EN 1729–2:2023, confirming its strength, durability and stability for long-term school use.
  • Anti-rocking geometry and rounded edges help reduce tipping risks and sharp contact points in busy learning environments.
  • Protected by a 20-year warranty on structural integrity and material performance under normal educational use.

The Aqua Blue Postura+ 310mm classroom chair is designed specifically for children aged 4–6, combining age-appropriate ergonomics with a durable, easy-clean one-piece shell. Use the specifications below to plan KS1, infant and SEN learning spaces with confidence.

Dimensions
550mm (H) × 360mm (W) × 365mm (D)
Weight
1.5kg
Warranty
20 years
Specification
Details
Purpose / Benefit
Seat Height
310mm
Sized for children aged 4–6 (DfE size mark 2)
Overall Dimensions
550mm (H) × 360mm (W) × 365mm (D)
Supports accurate classroom layout and table pairing
Weight
1.5kg
Light enough for staff to move and stack with ease
Material
High-impact polypropylene (30% recycled)
Durable, lightweight and easy to wipe clean for daily use
Construction
One-piece injection mould with gas-injected legs
No loose parts; added strength for long-term classroom service
Back Design
Curved back with ventilation window
Supports lumbar posture and improves airflow for pupil comfort
Front Edge
Waterfall seat profile
Reduces pressure behind the knees for improved comfort
Stacking
Stacks up to 12 high
Space-saving storage and fast room changeovers
Outdoor Suitability
UV filter for occasional outdoor use
Colour and material performance maintained in covered outdoor learning
Anti-Static / Anti-Rocking
Anti-static shell and anti-rocking geometry
Helps reduce tipping and static build-up in busy KS1 classrooms
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Meets UK standards for school furniture posture, strength and stability
Colour
Aqua Blue
Bright, engaging tone ideal for KS1 and infant classrooms

Dimensions and seat height are based on KS1 size mark 2 guidance and may vary slightly within standard manufacturing tolerances.

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 10 Working Days service.

For all other locations, please email help@coboltfurniture.co.uk for a quote.


  • Made to Order: Many of our products are manufactured specifically for your order. Because of this, returns depend on the product specifics and require prior permission from Cobolt Furniture.
  • Cancellations: We always endeavour to reduce cancellation costs. However, please note a partial or entire charge may be levied to cover material costs and administrative fees if a made-to-order line is cancelled.

FAQs: Aqua Blue Postura+ 310mm Classroom Chair (Ages 4–6)

Q: What age range is the Aqua Blue 310mm Postura+ chair suitable for?

A: This size is designed for children aged roughly 4–6 years and follows DfE size mark 2 guidance, making it ideal for KS1 and infant classrooms.

Q: How does the chair improve comfort for young pupils?

A: The waterfall seat edge, curved backrest and ventilation window work together to reduce leg pressure, support the lower back and keep pupils cooler in class.

Q: Is the Aqua Blue Postura+ chair easy to keep clean?

A: Yes, the smooth polypropylene shell is stain resistant and can be wiped clean quickly using standard school cleaning products, ideal for high-turnover KS1 spaces.

Q: Can these chairs be stacked safely in our hall or store cupboard?

A: Each chair is designed to stack securely up to 12 high, helping schools save space and clear rooms quickly for assemblies, clubs and cleaning.

Q: Are the chairs suitable for occasional outdoor learning?

A: Yes, the built-in UV filter allows occasional outdoor or covered-area use, although storing the chairs indoors will maximise their lifespan and colour retention.

Q: What makes Cobolt a reliable supplier for school seating?

A: Cobolt focuses on education and public-sector furniture, combining UK manufacturing, BS EN 1729 certification and a 20-year warranty to give schools confidence in long-term performance.

Overview

Product Overview: Aqua Blue Postura+ Chair (310mm, Ages 4–6)

The Aqua Blue Postura+ 310mm chair combines a bright, pupil-friendly colour with a proven ergonomic shell designed for 4–6 year olds. It is a practical choice for KS1 classrooms, infant schools and SEN spaces that need reliable, easy-care seating built around comfort and posture support.

Sized for Key Stage 1 Comfort

  • 310mm seat height matched to DfE size mark 2 guidance for ages 4–6.
  • Waterfall seat edge helps reduce pressure behind the knees during lessons.
  • Curved backrest gives gentle lumbar support as pupils read, write and draw.

Engineered for Busy Classrooms

  • One-piece injection mould means no loose fittings, screws or joints to maintain.
  • Gas-injected legs add strength without making the chair heavy for staff to move.
  • Stacks up to 12 high to clear floor space quickly for PE, clubs and cleaning.

Comfortable, Cool and Easy to Clean

A built-in ventilation window in the backrest helps pupils stay cool in warm or active classrooms, while the stain-resistant polypropylene shell wipes clean between lessons. The Aqua Blue finish stays bright thanks to a UV filter that supports occasional outdoor use in covered or playground learning areas.

Why Cobolt: Trusted Seating for Education

  • Specialist guidance from a team used to working with schools, MATs and SEN settings.
  • Clear lead times and straightforward communication from enquiry to delivery.
  • UK manufacturing for consistent quality, traceability and reliable replenishment.
  • 20-year warranty that underpins long-term value and budget planning.

Features & Benefits

Where the Aqua Blue Postura+ Chair Performs Best

The Aqua Blue Postura+ 310mm chair is ideal for KS1 classrooms, infant schools, reading corners, SEN support spaces and high-activity primary environments. Its ergonomic shaping and durable one-piece shell offer a dependable seating solution that supports young learners through every lesson, activity and transition.

Key Features

  • Ergonomic KS1 sizing – the 310mm seat height is purpose-built for children aged 4–6.
  • Seamless one-piece shell – eliminates screws, joins and weak points for long-term reliability.
  • Durable high-impact polymer – made using 30% recycled content for improved sustainability.
  • Reinforced gas-injected legs – deliver added strength for regular stacking and daily movement.
  • Ventilated back window – promotes airflow to help keep pupils cool in active classrooms.
  • Stable anti-rocking base – reduces movement and supports safer everyday classroom use.
  • Easy-clean, stain-resistant surface – ideal for glue, felt tips, messy play and snack time.
  • UV-resistant finish – retains its Aqua Blue colour during occasional outdoor or covered use.
  • Space-efficient stackability – stacks up to 12 high for fast room reconfiguration.
20-year warranty icon
20-year warranty
Free delivery icon
Free UK mainland delivery
UK manufactured icon
UK manufactured
BS EN 1729 compliant icon
BS EN 1729 compliant

The Cobolt Advantage

  • Effortless procurement for schools – clear specifications designed for MATs and primary environments.
  • Education-focused support – our UK-based team understands KS1 layouts, sizing and compliance needs.
  • Long-term cost efficiency – built to last with a 20-year warranty for predictable budgeting.
  • Ready for daily classroom life – lightweight, stackable and robust enough for continuous use.

Safety & Warranty

Safety & Warranty for Aqua Blue Postura+ 310mm Chairs

  • Designed to meet the demands of KS1 classrooms, with safety and stability built into the one-piece shell and leg design.
  • Tested and certified to BS EN 1729–1:2015 for correct educational dimensions and posture support.
  • Complies with BS EN 1729–2:2023, confirming its strength, durability and stability for long-term school use.
  • Anti-rocking geometry and rounded edges help reduce tipping risks and sharp contact points in busy learning environments.
  • Protected by a 20-year warranty on structural integrity and material performance under normal educational use.

Specification Dimensions

The Aqua Blue Postura+ 310mm classroom chair is designed specifically for children aged 4–6, combining age-appropriate ergonomics with a durable, easy-clean one-piece shell. Use the specifications below to plan KS1, infant and SEN learning spaces with confidence.

Dimensions
550mm (H) × 360mm (W) × 365mm (D)
Weight
1.5kg
Warranty
20 years
Specification
Details
Purpose / Benefit
Seat Height
310mm
Sized for children aged 4–6 (DfE size mark 2)
Overall Dimensions
550mm (H) × 360mm (W) × 365mm (D)
Supports accurate classroom layout and table pairing
Weight
1.5kg
Light enough for staff to move and stack with ease
Material
High-impact polypropylene (30% recycled)
Durable, lightweight and easy to wipe clean for daily use
Construction
One-piece injection mould with gas-injected legs
No loose parts; added strength for long-term classroom service
Back Design
Curved back with ventilation window
Supports lumbar posture and improves airflow for pupil comfort
Front Edge
Waterfall seat profile
Reduces pressure behind the knees for improved comfort
Stacking
Stacks up to 12 high
Space-saving storage and fast room changeovers
Outdoor Suitability
UV filter for occasional outdoor use
Colour and material performance maintained in covered outdoor learning
Anti-Static / Anti-Rocking
Anti-static shell and anti-rocking geometry
Helps reduce tipping and static build-up in busy KS1 classrooms
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Meets UK standards for school furniture posture, strength and stability
Colour
Aqua Blue
Bright, engaging tone ideal for KS1 and infant classrooms

Dimensions and seat height are based on KS1 size mark 2 guidance and may vary slightly within standard manufacturing tolerances.

Delivery & Returns

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 10 Working Days service.

For all other locations, please email help@coboltfurniture.co.uk for a quote.


  • Made to Order: Many of our products are manufactured specifically for your order. Because of this, returns depend on the product specifics and require prior permission from Cobolt Furniture.
  • Cancellations: We always endeavour to reduce cancellation costs. However, please note a partial or entire charge may be levied to cover material costs and administrative fees if a made-to-order line is cancelled.

Product FAQs

FAQs: Aqua Blue Postura+ 310mm Classroom Chair (Ages 4–6)

Q: What age range is the Aqua Blue 310mm Postura+ chair suitable for?

A: This size is designed for children aged roughly 4–6 years and follows DfE size mark 2 guidance, making it ideal for KS1 and infant classrooms.

Q: How does the chair improve comfort for young pupils?

A: The waterfall seat edge, curved backrest and ventilation window work together to reduce leg pressure, support the lower back and keep pupils cooler in class.

Q: Is the Aqua Blue Postura+ chair easy to keep clean?

A: Yes, the smooth polypropylene shell is stain resistant and can be wiped clean quickly using standard school cleaning products, ideal for high-turnover KS1 spaces.

Q: Can these chairs be stacked safely in our hall or store cupboard?

A: Each chair is designed to stack securely up to 12 high, helping schools save space and clear rooms quickly for assemblies, clubs and cleaning.

Q: Are the chairs suitable for occasional outdoor learning?

A: Yes, the built-in UV filter allows occasional outdoor or covered-area use, although storing the chairs indoors will maximise their lifespan and colour retention.

Q: What makes Cobolt a reliable supplier for school seating?

A: Cobolt focuses on education and public-sector furniture, combining UK manufacturing, BS EN 1729 certification and a 20-year warranty to give schools confidence in long-term performance.

Aqua Blue Postura+ Ergonomic One Piece Classroom Chair - 4-6 Years

Product code: KI46AQ
The Aqua Blue Postura+ Classroom Chair is designed specifically for children aged 4–6, giving KS1 learners a comfortable and supportive seat throughou...

Inc VAT

Exc VAT

£35.00

£29.17

Height by Age - 4-6 Years
Colours - Aqua Blue

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Overview

Features

Safety & Warranty

Specifications & Dimensions

Delivery & Returns

Product FAQs

Product Overview: Aqua Blue Postura+ Chair (310mm, Ages 4–6)

The Aqua Blue Postura+ 310mm chair combines a bright, pupil-friendly colour with a proven ergonomic shell designed for 4–6 year olds. It is a practical choice for KS1 classrooms, infant schools and SEN spaces that need reliable, easy-care seating built around comfort and posture support.

Sized for Key Stage 1 Comfort

  • 310mm seat height matched to DfE size mark 2 guidance for ages 4–6.
  • Waterfall seat edge helps reduce pressure behind the knees during lessons.
  • Curved backrest gives gentle lumbar support as pupils read, write and draw.

Engineered for Busy Classrooms

  • One-piece injection mould means no loose fittings, screws or joints to maintain.
  • Gas-injected legs add strength without making the chair heavy for staff to move.
  • Stacks up to 12 high to clear floor space quickly for PE, clubs and cleaning.

Comfortable, Cool and Easy to Clean

A built-in ventilation window in the backrest helps pupils stay cool in warm or active classrooms, while the stain-resistant polypropylene shell wipes clean between lessons. The Aqua Blue finish stays bright thanks to a UV filter that supports occasional outdoor use in covered or playground learning areas.

Why Cobolt: Trusted Seating for Education

  • Specialist guidance from a team used to working with schools, MATs and SEN settings.
  • Clear lead times and straightforward communication from enquiry to delivery.
  • UK manufacturing for consistent quality, traceability and reliable replenishment.
  • 20-year warranty that underpins long-term value and budget planning.

Where the Aqua Blue Postura+ Chair Performs Best

The Aqua Blue Postura+ 310mm chair is ideal for KS1 classrooms, infant schools, reading corners, SEN support spaces and high-activity primary environments. Its ergonomic shaping and durable one-piece shell offer a dependable seating solution that supports young learners through every lesson, activity and transition.

Key Features

  • Ergonomic KS1 sizing – the 310mm seat height is purpose-built for children aged 4–6.
  • Seamless one-piece shell – eliminates screws, joins and weak points for long-term reliability.
  • Durable high-impact polymer – made using 30% recycled content for improved sustainability.
  • Reinforced gas-injected legs – deliver added strength for regular stacking and daily movement.
  • Ventilated back window – promotes airflow to help keep pupils cool in active classrooms.
  • Stable anti-rocking base – reduces movement and supports safer everyday classroom use.
  • Easy-clean, stain-resistant surface – ideal for glue, felt tips, messy play and snack time.
  • UV-resistant finish – retains its Aqua Blue colour during occasional outdoor or covered use.
  • Space-efficient stackability – stacks up to 12 high for fast room reconfiguration.
20-year warranty icon
20-year warranty
Free delivery icon
Free UK mainland delivery
UK manufactured icon
UK manufactured
BS EN 1729 compliant icon
BS EN 1729 compliant

The Cobolt Advantage

  • Effortless procurement for schools – clear specifications designed for MATs and primary environments.
  • Education-focused support – our UK-based team understands KS1 layouts, sizing and compliance needs.
  • Long-term cost efficiency – built to last with a 20-year warranty for predictable budgeting.
  • Ready for daily classroom life – lightweight, stackable and robust enough for continuous use.

Safety & Warranty for Aqua Blue Postura+ 310mm Chairs

  • Designed to meet the demands of KS1 classrooms, with safety and stability built into the one-piece shell and leg design.
  • Tested and certified to BS EN 1729–1:2015 for correct educational dimensions and posture support.
  • Complies with BS EN 1729–2:2023, confirming its strength, durability and stability for long-term school use.
  • Anti-rocking geometry and rounded edges help reduce tipping risks and sharp contact points in busy learning environments.
  • Protected by a 20-year warranty on structural integrity and material performance under normal educational use.

The Aqua Blue Postura+ 310mm classroom chair is designed specifically for children aged 4–6, combining age-appropriate ergonomics with a durable, easy-clean one-piece shell. Use the specifications below to plan KS1, infant and SEN learning spaces with confidence.

Dimensions
550mm (H) × 360mm (W) × 365mm (D)
Weight
1.5kg
Warranty
20 years
Specification
Details
Purpose / Benefit
Seat Height
310mm
Sized for children aged 4–6 (DfE size mark 2)
Overall Dimensions
550mm (H) × 360mm (W) × 365mm (D)
Supports accurate classroom layout and table pairing
Weight
1.5kg
Light enough for staff to move and stack with ease
Material
High-impact polypropylene (30% recycled)
Durable, lightweight and easy to wipe clean for daily use
Construction
One-piece injection mould with gas-injected legs
No loose parts; added strength for long-term classroom service
Back Design
Curved back with ventilation window
Supports lumbar posture and improves airflow for pupil comfort
Front Edge
Waterfall seat profile
Reduces pressure behind the knees for improved comfort
Stacking
Stacks up to 12 high
Space-saving storage and fast room changeovers
Outdoor Suitability
UV filter for occasional outdoor use
Colour and material performance maintained in covered outdoor learning
Anti-Static / Anti-Rocking
Anti-static shell and anti-rocking geometry
Helps reduce tipping and static build-up in busy KS1 classrooms
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Meets UK standards for school furniture posture, strength and stability
Colour
Aqua Blue
Bright, engaging tone ideal for KS1 and infant classrooms

Dimensions and seat height are based on KS1 size mark 2 guidance and may vary slightly within standard manufacturing tolerances.

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 10 Working Days service.

For all other locations, please email help@coboltfurniture.co.uk for a quote.


  • Made to Order: Many of our products are manufactured specifically for your order. Because of this, returns depend on the product specifics and require prior permission from Cobolt Furniture.
  • Cancellations: We always endeavour to reduce cancellation costs. However, please note a partial or entire charge may be levied to cover material costs and administrative fees if a made-to-order line is cancelled.

FAQs: Aqua Blue Postura+ 310mm Classroom Chair (Ages 4–6)

Q: What age range is the Aqua Blue 310mm Postura+ chair suitable for?

A: This size is designed for children aged roughly 4–6 years and follows DfE size mark 2 guidance, making it ideal for KS1 and infant classrooms.

Q: How does the chair improve comfort for young pupils?

A: The waterfall seat edge, curved backrest and ventilation window work together to reduce leg pressure, support the lower back and keep pupils cooler in class.

Q: Is the Aqua Blue Postura+ chair easy to keep clean?

A: Yes, the smooth polypropylene shell is stain resistant and can be wiped clean quickly using standard school cleaning products, ideal for high-turnover KS1 spaces.

Q: Can these chairs be stacked safely in our hall or store cupboard?

A: Each chair is designed to stack securely up to 12 high, helping schools save space and clear rooms quickly for assemblies, clubs and cleaning.

Q: Are the chairs suitable for occasional outdoor learning?

A: Yes, the built-in UV filter allows occasional outdoor or covered-area use, although storing the chairs indoors will maximise their lifespan and colour retention.

Q: What makes Cobolt a reliable supplier for school seating?

A: Cobolt focuses on education and public-sector furniture, combining UK manufacturing, BS EN 1729 certification and a 20-year warranty to give schools confidence in long-term performance.

Overview

Product Overview: Aqua Blue Postura+ Chair (310mm, Ages 4–6)

The Aqua Blue Postura+ 310mm chair combines a bright, pupil-friendly colour with a proven ergonomic shell designed for 4–6 year olds. It is a practical choice for KS1 classrooms, infant schools and SEN spaces that need reliable, easy-care seating built around comfort and posture support.

Sized for Key Stage 1 Comfort

  • 310mm seat height matched to DfE size mark 2 guidance for ages 4–6.
  • Waterfall seat edge helps reduce pressure behind the knees during lessons.
  • Curved backrest gives gentle lumbar support as pupils read, write and draw.

Engineered for Busy Classrooms

  • One-piece injection mould means no loose fittings, screws or joints to maintain.
  • Gas-injected legs add strength without making the chair heavy for staff to move.
  • Stacks up to 12 high to clear floor space quickly for PE, clubs and cleaning.

Comfortable, Cool and Easy to Clean

A built-in ventilation window in the backrest helps pupils stay cool in warm or active classrooms, while the stain-resistant polypropylene shell wipes clean between lessons. The Aqua Blue finish stays bright thanks to a UV filter that supports occasional outdoor use in covered or playground learning areas.

Why Cobolt: Trusted Seating for Education

  • Specialist guidance from a team used to working with schools, MATs and SEN settings.
  • Clear lead times and straightforward communication from enquiry to delivery.
  • UK manufacturing for consistent quality, traceability and reliable replenishment.
  • 20-year warranty that underpins long-term value and budget planning.

Features & Benefits

Where the Aqua Blue Postura+ Chair Performs Best

The Aqua Blue Postura+ 310mm chair is ideal for KS1 classrooms, infant schools, reading corners, SEN support spaces and high-activity primary environments. Its ergonomic shaping and durable one-piece shell offer a dependable seating solution that supports young learners through every lesson, activity and transition.

Key Features

  • Ergonomic KS1 sizing – the 310mm seat height is purpose-built for children aged 4–6.
  • Seamless one-piece shell – eliminates screws, joins and weak points for long-term reliability.
  • Durable high-impact polymer – made using 30% recycled content for improved sustainability.
  • Reinforced gas-injected legs – deliver added strength for regular stacking and daily movement.
  • Ventilated back window – promotes airflow to help keep pupils cool in active classrooms.
  • Stable anti-rocking base – reduces movement and supports safer everyday classroom use.
  • Easy-clean, stain-resistant surface – ideal for glue, felt tips, messy play and snack time.
  • UV-resistant finish – retains its Aqua Blue colour during occasional outdoor or covered use.
  • Space-efficient stackability – stacks up to 12 high for fast room reconfiguration.
20-year warranty icon
20-year warranty
Free delivery icon
Free UK mainland delivery
UK manufactured icon
UK manufactured
BS EN 1729 compliant icon
BS EN 1729 compliant

The Cobolt Advantage

  • Effortless procurement for schools – clear specifications designed for MATs and primary environments.
  • Education-focused support – our UK-based team understands KS1 layouts, sizing and compliance needs.
  • Long-term cost efficiency – built to last with a 20-year warranty for predictable budgeting.
  • Ready for daily classroom life – lightweight, stackable and robust enough for continuous use.

Safety & Warranty

Safety & Warranty for Aqua Blue Postura+ 310mm Chairs

  • Designed to meet the demands of KS1 classrooms, with safety and stability built into the one-piece shell and leg design.
  • Tested and certified to BS EN 1729–1:2015 for correct educational dimensions and posture support.
  • Complies with BS EN 1729–2:2023, confirming its strength, durability and stability for long-term school use.
  • Anti-rocking geometry and rounded edges help reduce tipping risks and sharp contact points in busy learning environments.
  • Protected by a 20-year warranty on structural integrity and material performance under normal educational use.

Specification Dimensions

The Aqua Blue Postura+ 310mm classroom chair is designed specifically for children aged 4–6, combining age-appropriate ergonomics with a durable, easy-clean one-piece shell. Use the specifications below to plan KS1, infant and SEN learning spaces with confidence.

Dimensions
550mm (H) × 360mm (W) × 365mm (D)
Weight
1.5kg
Warranty
20 years
Specification
Details
Purpose / Benefit
Seat Height
310mm
Sized for children aged 4–6 (DfE size mark 2)
Overall Dimensions
550mm (H) × 360mm (W) × 365mm (D)
Supports accurate classroom layout and table pairing
Weight
1.5kg
Light enough for staff to move and stack with ease
Material
High-impact polypropylene (30% recycled)
Durable, lightweight and easy to wipe clean for daily use
Construction
One-piece injection mould with gas-injected legs
No loose parts; added strength for long-term classroom service
Back Design
Curved back with ventilation window
Supports lumbar posture and improves airflow for pupil comfort
Front Edge
Waterfall seat profile
Reduces pressure behind the knees for improved comfort
Stacking
Stacks up to 12 high
Space-saving storage and fast room changeovers
Outdoor Suitability
UV filter for occasional outdoor use
Colour and material performance maintained in covered outdoor learning
Anti-Static / Anti-Rocking
Anti-static shell and anti-rocking geometry
Helps reduce tipping and static build-up in busy KS1 classrooms
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Meets UK standards for school furniture posture, strength and stability
Colour
Aqua Blue
Bright, engaging tone ideal for KS1 and infant classrooms

Dimensions and seat height are based on KS1 size mark 2 guidance and may vary slightly within standard manufacturing tolerances.

Delivery & Returns

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 10 Working Days service.

For all other locations, please email help@coboltfurniture.co.uk for a quote.


  • Made to Order: Many of our products are manufactured specifically for your order. Because of this, returns depend on the product specifics and require prior permission from Cobolt Furniture.
  • Cancellations: We always endeavour to reduce cancellation costs. However, please note a partial or entire charge may be levied to cover material costs and administrative fees if a made-to-order line is cancelled.

Product FAQs

FAQs: Aqua Blue Postura+ 310mm Classroom Chair (Ages 4–6)

Q: What age range is the Aqua Blue 310mm Postura+ chair suitable for?

A: This size is designed for children aged roughly 4–6 years and follows DfE size mark 2 guidance, making it ideal for KS1 and infant classrooms.

Q: How does the chair improve comfort for young pupils?

A: The waterfall seat edge, curved backrest and ventilation window work together to reduce leg pressure, support the lower back and keep pupils cooler in class.

Q: Is the Aqua Blue Postura+ chair easy to keep clean?

A: Yes, the smooth polypropylene shell is stain resistant and can be wiped clean quickly using standard school cleaning products, ideal for high-turnover KS1 spaces.

Q: Can these chairs be stacked safely in our hall or store cupboard?

A: Each chair is designed to stack securely up to 12 high, helping schools save space and clear rooms quickly for assemblies, clubs and cleaning.

Q: Are the chairs suitable for occasional outdoor learning?

A: Yes, the built-in UV filter allows occasional outdoor or covered-area use, although storing the chairs indoors will maximise their lifespan and colour retention.

Q: What makes Cobolt a reliable supplier for school seating?

A: Cobolt focuses on education and public-sector furniture, combining UK manufacturing, BS EN 1729 certification and a 20-year warranty to give schools confidence in long-term performance.

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