A mint‑green ergonomic plastic chair set on wooden flooring beside a soft rug and beanbags, ideal for quiet reading or relaxation in an early learning space.
Jade green Postura+ chair with a sleek silhouette and ergonomic shaping, suitable for classrooms and youth activity zones.
KI Europe’s jade green chair with feature banners and a circular image of stacked chairs in assorted colours for space-saving display.
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: Jade Green Postura+ Chair (310mm, Ages 4–6)

The Jade Green Postura+ 310mm chair offers a modern, uplifting colour that works well in KS1 classrooms, early primary breakout spaces and SEN environments. Its ergonomic shell, child-appropriate seat height and robust construction make it a reliable seating choice for pupils aged 4–6.

Ergonomics Tuned to KS1 Learners

  • 310mm seat height provides the right sitting position for 4–6 year olds.
  • Waterfall front edge reduces pressure on legs to support circulation.
  • Curved backrest follows the spine’s natural curve for better lumbar support.

Ready for Busy Classroom Use

  • One-piece polypropylene shell with no loose fittings or joints to tighten.
  • Light 1.5kg weight and integrated handhold make chairs easy to move and reconfigure.
  • Stacks up to 12 high so staff can clear spaces quickly for assemblies and clubs.

Clean, Fresh and Easy to Maintain

The Jade Green finish brings a fresh, calm feel to primary spaces. A ventilated back window improves airflow for pupils, while the stain-resistant shell wipes clean between activities. Clearly defined dimensions and UK manufacture make this chair simple to specify for whole-school or MAT-wide projects.

Why Cobolt: Free Delivery and Education-Focused Support

  • Free UK mainland delivery included on every Postura+ chair—no surprise carriage fees at checkout.
  • Sector-specific advice from a team that works daily with schools, MATs, councils and SEN providers.
  • UK manufacturing for consistent quality, dependable lead times and easier reordering.
  • 20-year warranty as standard, supporting long-term value and predictable budgeting.

Where the Jade Green Postura+ Chair Performs Best

The Jade Green Postura+ 310mm chair is ideal for KS1 classrooms, calm reading areas, SEN spaces, break-out zones and early-primary project rooms. Its modern green tone works well in biophilic or nature-inspired schemes, while the ergonomic shell supports focused, comfortable learning.

Key Features

  • KS1-specific seat height – 310mm height tailored to pupils aged 4–6.
  • Single-piece polypropylene shell – no bolts or joints, reducing maintenance over time.
  • High-impact material with recycled content – 30% recycled polypropylene for a more sustainable option.
  • Gas-injected leg design – reinforces the structure for everyday stacking and movement.
  • Ventilation back window – helps pupils stay cooler in active classrooms and warm weather.
  • Anti-rocking seat geometry – supports safer, more stable sitting for younger children.
  • Stain-resistant, wipe-clean surface – ideal for art, craft, snack time and daily cleaning routines.
  • UV-stable Jade Green colour – suitable for occasional outdoor or covered learning sessions.
  • Space-saving stacking – stacks up to 12 high for efficient storage in primary schools.
20-year warranty icon
20-year warranty
Free delivery icon
Free UK mainland delivery on every order
UK manufactured icon
UK manufactured seating
BS EN 1729 compliant icon
BS EN 1729 compliant

The Cobolt Advantage

  • Free delivery built in – UK mainland delivery is always included in the price, helping schools avoid hidden carriage costs.
  • Education-led service – Cobolt’s team understands timetables, site access and safeguarding, tailoring deliveries accordingly.
  • Straightforward specifying – clear KS1 sizing, standards and dimensions to support MAT procurement and frameworks.
  • Made to last in schools – durable manufacturing and a 20-year warranty reduce replacement cycles and disruption.

Safety & Warranty for Jade Green Postura+ 310mm Chairs

  • Fully compliant with BS EN 1729–1:2015 for educational dimensions and ergonomic posture support.
  • Tested to BS EN 1729–2:2023 for strength, durability and classroom stability.
  • Anti-rocking shell geometry and rounded edges support safer seating for younger pupils.
  • Stain-resistant, non-porous surface aids hygiene routines in primary and SEN environments.
  • Backed by a 20-year structural and material warranty for long-term peace of mind.

The Jade Green Postura+ 310mm chair is engineered for KS1 pupils and built to withstand the demands of daily primary use. These specifications support layout planning, table pairing and bulk procurement for schools and MATs.

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 guidance for KS1).
Overall Dimensions
550mm (H) × 360mm (W) × 365mm (D)
Supports accurate classroom planning and desk height selection.
Material
High-impact polypropylene (30% recycled)
Offers a strong yet lightweight shell for daily school use.
Construction
One-piece injection mould with gas-injected legs
Improves strength and removes weak points found in multi-part chairs.
Backrest
Curved profile with ventilation window
Supports posture and improves comfort by allowing airflow.
Front Edge
Waterfall seat shape
Reduces pressure behind the knees and improves overall comfort.
Stacking
Stacks up to 12 chairs
Supports efficient storage and fast classroom reconfiguration.
Outdoor Suitability
UV-stable Jade Green shell
Suitable for occasional outdoor or covered learning sessions.
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Meets UK school furniture standards for posture, strength and safety.
Colour
Jade Green
Modern, calming tone suited to contemporary learning environments.

Dimensions and seat heights are based on KS1 size mark 2 guidance and may vary slightly within normal 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: Jade Green Postura+ 310mm Classroom Chair (Ages 4–6)

Q: What age range is the Jade Green 310mm Postura+ chair suitable for?

A: It is designed for children aged approximately 4–6 years, matching DfE size mark 2 guidance for KS1 seating.

Q: Why choose the Jade Green colour?

A: Jade Green offers a modern, calming tone that works well in nature-inspired schemes, SEN-friendly spaces and contemporary primary classrooms.

Q: Is the chair easy to clean between lessons?

A: Yes, the smooth polypropylene shell is stain resistant and can be wiped clean quickly using standard school cleaning products, even after arts, crafts or snack time.

Q: How many Jade Green Postura+ chairs can we stack safely?

A: Each chair can be stacked up to 12 high, helping schools make best use of storage space in halls, corridors and shared classrooms.

Q: Do you charge extra for delivery?

A: No—Cobolt includes free UK mainland delivery on Postura+ chairs, so schools and MATs can budget confidently without additional carriage charges.

Q: Are these chairs suitable for occasional outdoor lessons?

A: Yes, the UV-stable Jade Green shell is suitable for occasional outdoor or covered learning, although indoor storage is recommended to maximise lifespan.

Q: How long are the chairs expected to last in a primary setting?

A: The combination of a one-piece mould, gas-reinforced legs and high-impact material is built for long-term educational use, supported by Cobolt’s 20-year warranty.

Overview

Product Overview: Jade Green Postura+ Chair (310mm, Ages 4–6)

The Jade Green Postura+ 310mm chair offers a modern, uplifting colour that works well in KS1 classrooms, early primary breakout spaces and SEN environments. Its ergonomic shell, child-appropriate seat height and robust construction make it a reliable seating choice for pupils aged 4–6.

Ergonomics Tuned to KS1 Learners

  • 310mm seat height provides the right sitting position for 4–6 year olds.
  • Waterfall front edge reduces pressure on legs to support circulation.
  • Curved backrest follows the spine’s natural curve for better lumbar support.

Ready for Busy Classroom Use

  • One-piece polypropylene shell with no loose fittings or joints to tighten.
  • Light 1.5kg weight and integrated handhold make chairs easy to move and reconfigure.
  • Stacks up to 12 high so staff can clear spaces quickly for assemblies and clubs.

Clean, Fresh and Easy to Maintain

The Jade Green finish brings a fresh, calm feel to primary spaces. A ventilated back window improves airflow for pupils, while the stain-resistant shell wipes clean between activities. Clearly defined dimensions and UK manufacture make this chair simple to specify for whole-school or MAT-wide projects.

Why Cobolt: Free Delivery and Education-Focused Support

  • Free UK mainland delivery included on every Postura+ chair—no surprise carriage fees at checkout.
  • Sector-specific advice from a team that works daily with schools, MATs, councils and SEN providers.
  • UK manufacturing for consistent quality, dependable lead times and easier reordering.
  • 20-year warranty as standard, supporting long-term value and predictable budgeting.

Features & Benefits

Where the Jade Green Postura+ Chair Performs Best

The Jade Green Postura+ 310mm chair is ideal for KS1 classrooms, calm reading areas, SEN spaces, break-out zones and early-primary project rooms. Its modern green tone works well in biophilic or nature-inspired schemes, while the ergonomic shell supports focused, comfortable learning.

Key Features

  • KS1-specific seat height – 310mm height tailored to pupils aged 4–6.
  • Single-piece polypropylene shell – no bolts or joints, reducing maintenance over time.
  • High-impact material with recycled content – 30% recycled polypropylene for a more sustainable option.
  • Gas-injected leg design – reinforces the structure for everyday stacking and movement.
  • Ventilation back window – helps pupils stay cooler in active classrooms and warm weather.
  • Anti-rocking seat geometry – supports safer, more stable sitting for younger children.
  • Stain-resistant, wipe-clean surface – ideal for art, craft, snack time and daily cleaning routines.
  • UV-stable Jade Green colour – suitable for occasional outdoor or covered learning sessions.
  • Space-saving stacking – stacks up to 12 high for efficient storage in primary schools.
20-year warranty icon
20-year warranty
Free delivery icon
Free UK mainland delivery on every order
UK manufactured icon
UK manufactured seating
BS EN 1729 compliant icon
BS EN 1729 compliant

The Cobolt Advantage

  • Free delivery built in – UK mainland delivery is always included in the price, helping schools avoid hidden carriage costs.
  • Education-led service – Cobolt’s team understands timetables, site access and safeguarding, tailoring deliveries accordingly.
  • Straightforward specifying – clear KS1 sizing, standards and dimensions to support MAT procurement and frameworks.
  • Made to last in schools – durable manufacturing and a 20-year warranty reduce replacement cycles and disruption.

Safety & Warranty

Safety & Warranty for Jade Green Postura+ 310mm Chairs

  • Fully compliant with BS EN 1729–1:2015 for educational dimensions and ergonomic posture support.
  • Tested to BS EN 1729–2:2023 for strength, durability and classroom stability.
  • Anti-rocking shell geometry and rounded edges support safer seating for younger pupils.
  • Stain-resistant, non-porous surface aids hygiene routines in primary and SEN environments.
  • Backed by a 20-year structural and material warranty for long-term peace of mind.

Specification Dimensions

The Jade Green Postura+ 310mm chair is engineered for KS1 pupils and built to withstand the demands of daily primary use. These specifications support layout planning, table pairing and bulk procurement for schools and MATs.

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 guidance for KS1).
Overall Dimensions
550mm (H) × 360mm (W) × 365mm (D)
Supports accurate classroom planning and desk height selection.
Material
High-impact polypropylene (30% recycled)
Offers a strong yet lightweight shell for daily school use.
Construction
One-piece injection mould with gas-injected legs
Improves strength and removes weak points found in multi-part chairs.
Backrest
Curved profile with ventilation window
Supports posture and improves comfort by allowing airflow.
Front Edge
Waterfall seat shape
Reduces pressure behind the knees and improves overall comfort.
Stacking
Stacks up to 12 chairs
Supports efficient storage and fast classroom reconfiguration.
Outdoor Suitability
UV-stable Jade Green shell
Suitable for occasional outdoor or covered learning sessions.
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Meets UK school furniture standards for posture, strength and safety.
Colour
Jade Green
Modern, calming tone suited to contemporary learning environments.

Dimensions and seat heights are based on KS1 size mark 2 guidance and may vary slightly within normal 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: Jade Green Postura+ 310mm Classroom Chair (Ages 4–6)

Q: What age range is the Jade Green 310mm Postura+ chair suitable for?

A: It is designed for children aged approximately 4–6 years, matching DfE size mark 2 guidance for KS1 seating.

Q: Why choose the Jade Green colour?

A: Jade Green offers a modern, calming tone that works well in nature-inspired schemes, SEN-friendly spaces and contemporary primary classrooms.

Q: Is the chair easy to clean between lessons?

A: Yes, the smooth polypropylene shell is stain resistant and can be wiped clean quickly using standard school cleaning products, even after arts, crafts or snack time.

Q: How many Jade Green Postura+ chairs can we stack safely?

A: Each chair can be stacked up to 12 high, helping schools make best use of storage space in halls, corridors and shared classrooms.

Q: Do you charge extra for delivery?

A: No—Cobolt includes free UK mainland delivery on Postura+ chairs, so schools and MATs can budget confidently without additional carriage charges.

Q: Are these chairs suitable for occasional outdoor lessons?

A: Yes, the UV-stable Jade Green shell is suitable for occasional outdoor or covered learning, although indoor storage is recommended to maximise lifespan.

Q: How long are the chairs expected to last in a primary setting?

A: The combination of a one-piece mould, gas-reinforced legs and high-impact material is built for long-term educational use, supported by Cobolt’s 20-year warranty.

Jade Green Postura+ Ergonomic One Piece Classroom Chair - 4-6 Years

Product code: KI46JG
The Jade Green Postura+ Classroom Chair adds a fresh, contemporary tone to KS1 spaces while supporting the posture of children aged 4–6. With a 310mm ...

Inc VAT

Exc VAT

£35.00

£29.17

Height by Age - 4-6 Years
Colours - Jade Green

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Overview

Features

Safety & Warranty

Specifications & Dimensions

Delivery & Returns

Product FAQs

Product Overview: Jade Green Postura+ Chair (310mm, Ages 4–6)

The Jade Green Postura+ 310mm chair offers a modern, uplifting colour that works well in KS1 classrooms, early primary breakout spaces and SEN environments. Its ergonomic shell, child-appropriate seat height and robust construction make it a reliable seating choice for pupils aged 4–6.

Ergonomics Tuned to KS1 Learners

  • 310mm seat height provides the right sitting position for 4–6 year olds.
  • Waterfall front edge reduces pressure on legs to support circulation.
  • Curved backrest follows the spine’s natural curve for better lumbar support.

Ready for Busy Classroom Use

  • One-piece polypropylene shell with no loose fittings or joints to tighten.
  • Light 1.5kg weight and integrated handhold make chairs easy to move and reconfigure.
  • Stacks up to 12 high so staff can clear spaces quickly for assemblies and clubs.

Clean, Fresh and Easy to Maintain

The Jade Green finish brings a fresh, calm feel to primary spaces. A ventilated back window improves airflow for pupils, while the stain-resistant shell wipes clean between activities. Clearly defined dimensions and UK manufacture make this chair simple to specify for whole-school or MAT-wide projects.

Why Cobolt: Free Delivery and Education-Focused Support

  • Free UK mainland delivery included on every Postura+ chair—no surprise carriage fees at checkout.
  • Sector-specific advice from a team that works daily with schools, MATs, councils and SEN providers.
  • UK manufacturing for consistent quality, dependable lead times and easier reordering.
  • 20-year warranty as standard, supporting long-term value and predictable budgeting.

Where the Jade Green Postura+ Chair Performs Best

The Jade Green Postura+ 310mm chair is ideal for KS1 classrooms, calm reading areas, SEN spaces, break-out zones and early-primary project rooms. Its modern green tone works well in biophilic or nature-inspired schemes, while the ergonomic shell supports focused, comfortable learning.

Key Features

  • KS1-specific seat height – 310mm height tailored to pupils aged 4–6.
  • Single-piece polypropylene shell – no bolts or joints, reducing maintenance over time.
  • High-impact material with recycled content – 30% recycled polypropylene for a more sustainable option.
  • Gas-injected leg design – reinforces the structure for everyday stacking and movement.
  • Ventilation back window – helps pupils stay cooler in active classrooms and warm weather.
  • Anti-rocking seat geometry – supports safer, more stable sitting for younger children.
  • Stain-resistant, wipe-clean surface – ideal for art, craft, snack time and daily cleaning routines.
  • UV-stable Jade Green colour – suitable for occasional outdoor or covered learning sessions.
  • Space-saving stacking – stacks up to 12 high for efficient storage in primary schools.
20-year warranty icon
20-year warranty
Free delivery icon
Free UK mainland delivery on every order
UK manufactured icon
UK manufactured seating
BS EN 1729 compliant icon
BS EN 1729 compliant

The Cobolt Advantage

  • Free delivery built in – UK mainland delivery is always included in the price, helping schools avoid hidden carriage costs.
  • Education-led service – Cobolt’s team understands timetables, site access and safeguarding, tailoring deliveries accordingly.
  • Straightforward specifying – clear KS1 sizing, standards and dimensions to support MAT procurement and frameworks.
  • Made to last in schools – durable manufacturing and a 20-year warranty reduce replacement cycles and disruption.

Safety & Warranty for Jade Green Postura+ 310mm Chairs

  • Fully compliant with BS EN 1729–1:2015 for educational dimensions and ergonomic posture support.
  • Tested to BS EN 1729–2:2023 for strength, durability and classroom stability.
  • Anti-rocking shell geometry and rounded edges support safer seating for younger pupils.
  • Stain-resistant, non-porous surface aids hygiene routines in primary and SEN environments.
  • Backed by a 20-year structural and material warranty for long-term peace of mind.

The Jade Green Postura+ 310mm chair is engineered for KS1 pupils and built to withstand the demands of daily primary use. These specifications support layout planning, table pairing and bulk procurement for schools and MATs.

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 guidance for KS1).
Overall Dimensions
550mm (H) × 360mm (W) × 365mm (D)
Supports accurate classroom planning and desk height selection.
Material
High-impact polypropylene (30% recycled)
Offers a strong yet lightweight shell for daily school use.
Construction
One-piece injection mould with gas-injected legs
Improves strength and removes weak points found in multi-part chairs.
Backrest
Curved profile with ventilation window
Supports posture and improves comfort by allowing airflow.
Front Edge
Waterfall seat shape
Reduces pressure behind the knees and improves overall comfort.
Stacking
Stacks up to 12 chairs
Supports efficient storage and fast classroom reconfiguration.
Outdoor Suitability
UV-stable Jade Green shell
Suitable for occasional outdoor or covered learning sessions.
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Meets UK school furniture standards for posture, strength and safety.
Colour
Jade Green
Modern, calming tone suited to contemporary learning environments.

Dimensions and seat heights are based on KS1 size mark 2 guidance and may vary slightly within normal 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: Jade Green Postura+ 310mm Classroom Chair (Ages 4–6)

Q: What age range is the Jade Green 310mm Postura+ chair suitable for?

A: It is designed for children aged approximately 4–6 years, matching DfE size mark 2 guidance for KS1 seating.

Q: Why choose the Jade Green colour?

A: Jade Green offers a modern, calming tone that works well in nature-inspired schemes, SEN-friendly spaces and contemporary primary classrooms.

Q: Is the chair easy to clean between lessons?

A: Yes, the smooth polypropylene shell is stain resistant and can be wiped clean quickly using standard school cleaning products, even after arts, crafts or snack time.

Q: How many Jade Green Postura+ chairs can we stack safely?

A: Each chair can be stacked up to 12 high, helping schools make best use of storage space in halls, corridors and shared classrooms.

Q: Do you charge extra for delivery?

A: No—Cobolt includes free UK mainland delivery on Postura+ chairs, so schools and MATs can budget confidently without additional carriage charges.

Q: Are these chairs suitable for occasional outdoor lessons?

A: Yes, the UV-stable Jade Green shell is suitable for occasional outdoor or covered learning, although indoor storage is recommended to maximise lifespan.

Q: How long are the chairs expected to last in a primary setting?

A: The combination of a one-piece mould, gas-reinforced legs and high-impact material is built for long-term educational use, supported by Cobolt’s 20-year warranty.

Overview

Product Overview: Jade Green Postura+ Chair (310mm, Ages 4–6)

The Jade Green Postura+ 310mm chair offers a modern, uplifting colour that works well in KS1 classrooms, early primary breakout spaces and SEN environments. Its ergonomic shell, child-appropriate seat height and robust construction make it a reliable seating choice for pupils aged 4–6.

Ergonomics Tuned to KS1 Learners

  • 310mm seat height provides the right sitting position for 4–6 year olds.
  • Waterfall front edge reduces pressure on legs to support circulation.
  • Curved backrest follows the spine’s natural curve for better lumbar support.

Ready for Busy Classroom Use

  • One-piece polypropylene shell with no loose fittings or joints to tighten.
  • Light 1.5kg weight and integrated handhold make chairs easy to move and reconfigure.
  • Stacks up to 12 high so staff can clear spaces quickly for assemblies and clubs.

Clean, Fresh and Easy to Maintain

The Jade Green finish brings a fresh, calm feel to primary spaces. A ventilated back window improves airflow for pupils, while the stain-resistant shell wipes clean between activities. Clearly defined dimensions and UK manufacture make this chair simple to specify for whole-school or MAT-wide projects.

Why Cobolt: Free Delivery and Education-Focused Support

  • Free UK mainland delivery included on every Postura+ chair—no surprise carriage fees at checkout.
  • Sector-specific advice from a team that works daily with schools, MATs, councils and SEN providers.
  • UK manufacturing for consistent quality, dependable lead times and easier reordering.
  • 20-year warranty as standard, supporting long-term value and predictable budgeting.

Features & Benefits

Where the Jade Green Postura+ Chair Performs Best

The Jade Green Postura+ 310mm chair is ideal for KS1 classrooms, calm reading areas, SEN spaces, break-out zones and early-primary project rooms. Its modern green tone works well in biophilic or nature-inspired schemes, while the ergonomic shell supports focused, comfortable learning.

Key Features

  • KS1-specific seat height – 310mm height tailored to pupils aged 4–6.
  • Single-piece polypropylene shell – no bolts or joints, reducing maintenance over time.
  • High-impact material with recycled content – 30% recycled polypropylene for a more sustainable option.
  • Gas-injected leg design – reinforces the structure for everyday stacking and movement.
  • Ventilation back window – helps pupils stay cooler in active classrooms and warm weather.
  • Anti-rocking seat geometry – supports safer, more stable sitting for younger children.
  • Stain-resistant, wipe-clean surface – ideal for art, craft, snack time and daily cleaning routines.
  • UV-stable Jade Green colour – suitable for occasional outdoor or covered learning sessions.
  • Space-saving stacking – stacks up to 12 high for efficient storage in primary schools.
20-year warranty icon
20-year warranty
Free delivery icon
Free UK mainland delivery on every order
UK manufactured icon
UK manufactured seating
BS EN 1729 compliant icon
BS EN 1729 compliant

The Cobolt Advantage

  • Free delivery built in – UK mainland delivery is always included in the price, helping schools avoid hidden carriage costs.
  • Education-led service – Cobolt’s team understands timetables, site access and safeguarding, tailoring deliveries accordingly.
  • Straightforward specifying – clear KS1 sizing, standards and dimensions to support MAT procurement and frameworks.
  • Made to last in schools – durable manufacturing and a 20-year warranty reduce replacement cycles and disruption.

Safety & Warranty

Safety & Warranty for Jade Green Postura+ 310mm Chairs

  • Fully compliant with BS EN 1729–1:2015 for educational dimensions and ergonomic posture support.
  • Tested to BS EN 1729–2:2023 for strength, durability and classroom stability.
  • Anti-rocking shell geometry and rounded edges support safer seating for younger pupils.
  • Stain-resistant, non-porous surface aids hygiene routines in primary and SEN environments.
  • Backed by a 20-year structural and material warranty for long-term peace of mind.

Specification Dimensions

The Jade Green Postura+ 310mm chair is engineered for KS1 pupils and built to withstand the demands of daily primary use. These specifications support layout planning, table pairing and bulk procurement for schools and MATs.

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 guidance for KS1).
Overall Dimensions
550mm (H) × 360mm (W) × 365mm (D)
Supports accurate classroom planning and desk height selection.
Material
High-impact polypropylene (30% recycled)
Offers a strong yet lightweight shell for daily school use.
Construction
One-piece injection mould with gas-injected legs
Improves strength and removes weak points found in multi-part chairs.
Backrest
Curved profile with ventilation window
Supports posture and improves comfort by allowing airflow.
Front Edge
Waterfall seat shape
Reduces pressure behind the knees and improves overall comfort.
Stacking
Stacks up to 12 chairs
Supports efficient storage and fast classroom reconfiguration.
Outdoor Suitability
UV-stable Jade Green shell
Suitable for occasional outdoor or covered learning sessions.
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Meets UK school furniture standards for posture, strength and safety.
Colour
Jade Green
Modern, calming tone suited to contemporary learning environments.

Dimensions and seat heights are based on KS1 size mark 2 guidance and may vary slightly within normal 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: Jade Green Postura+ 310mm Classroom Chair (Ages 4–6)

Q: What age range is the Jade Green 310mm Postura+ chair suitable for?

A: It is designed for children aged approximately 4–6 years, matching DfE size mark 2 guidance for KS1 seating.

Q: Why choose the Jade Green colour?

A: Jade Green offers a modern, calming tone that works well in nature-inspired schemes, SEN-friendly spaces and contemporary primary classrooms.

Q: Is the chair easy to clean between lessons?

A: Yes, the smooth polypropylene shell is stain resistant and can be wiped clean quickly using standard school cleaning products, even after arts, crafts or snack time.

Q: How many Jade Green Postura+ chairs can we stack safely?

A: Each chair can be stacked up to 12 high, helping schools make best use of storage space in halls, corridors and shared classrooms.

Q: Do you charge extra for delivery?

A: No—Cobolt includes free UK mainland delivery on Postura+ chairs, so schools and MATs can budget confidently without additional carriage charges.

Q: Are these chairs suitable for occasional outdoor lessons?

A: Yes, the UV-stable Jade Green shell is suitable for occasional outdoor or covered learning, although indoor storage is recommended to maximise lifespan.

Q: How long are the chairs expected to last in a primary setting?

A: The combination of a one-piece mould, gas-reinforced legs and high-impact material is built for long-term educational use, supported by Cobolt’s 20-year warranty.

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