A sleek aqua blue ergonomic chair set within a contemporary school classroom, surrounded by open books, pencil cases and student backpacks.
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 (430mm, Ages 11–14)

The Aqua Blue Postura+ 430mm chair provides specification-ready seating for secondary students aged 11–14, combining proven ergonomic support with a clean, modern colour that suits contemporary classrooms, labs and ICT spaces.

Ergonomic Design for Secondary Pupils

  • 430mm seat height aligned with DfE size mark 5 for ages 11–14
  • Curved backrest promoting stable, upright sitting posture
  • Waterfall seat front reducing pressure on legs during longer lessons

Engineered for Daily Secondary Use

  • One-piece injection-moulded shell with no loose screws or joints
  • Gas-injected legs adding rigidity for frequent movement and stacking
  • Independently weight tested to support up to 204kg

Aqua Blue for Modern Learning Environments

The Aqua Blue finish brings a fresh, contemporary look to secondary classrooms, science labs, language rooms and ICT suites, helping create cohesive, professional learning environments across year groups.

Why Cobolt: Service, Experience & Delivery

  • Free UK mainland delivery on all Aqua Blue Postura+ chairs
  • Over 50 years supporting schools, academies, colleges and public-sector estates
  • Tracked, well-managed deliveries coordinated by Cobolt’s in-house logistics team
  • Dedicated account managers providing knowledgeable, personal support from enquiry to aftercare

Where the Aqua Blue Postura+ 430mm Chair Performs Best

The Aqua Blue Postura+ 430mm chair is ideal for secondary classrooms, science labs, ICT rooms, language suites, sixth-form study spaces and exam halls. Its height and shaping support students aged 11–14 through extended lessons, assessments and independent study, while the Aqua Blue finish complements modern, coordinated interiors.

Key Features

  • 430mm seat height – designed for students aged 11–14 at standard secondary desk heights.
  • One-piece polypropylene shell – no fixings or joints to loosen over time.
  • 30% recycled high-impact material – balances durability with a lower-impact material choice.
  • Gas-injected legs – enhanced strength for daily stacking, moving and intensive use.
  • Ventilated back window – helps regulate comfort during longer lessons and exams.
  • Anti-static and anti-rocking design – supports stability in busy secondary classrooms.
  • Stain-resistant, non-porous surface – wipes clean quickly after practical work and daily use.
  • UV filter – suitable for occasional sheltered outdoor or breakout learning.
  • Stackable up to 12 high – ideal for exam storage, halls and multi-purpose spaces.
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

  • Free UK mainland delivery on every Aqua Blue Postura+ 430mm chair.
  • Five decades of sector expertise guiding schools, academies and MATs on sizing and layouts.
  • Tracked, dependable delivery overseen by Cobolt’s own logistics and customer service team.
  • Account-managed support focused on clear communication, simplified ordering and confident rollout.

Safety & Warranty for Aqua Blue Postura+ 430mm Chairs

  • BS EN 1729–1:2015 certified for secondary-age ergonomics and posture support
  • BS EN 1729–2:2023 compliant for strength, stability and long-term durability
  • Anti-rocking base geometry helping minimise tipping risk in busy secondary classrooms
  • Non-porous, stain-resistant shell supporting fast, hygienic cleaning routines
  • 20-year warranty covering structural integrity and material performance under normal educational use

The Aqua Blue Postura+ 430mm chair is designed for secondary pupils, combining tested ergonomics with robust, easy-care construction. These specifications help estates teams and MATs plan standardised seating for KS3 and KS4.

Dimensions
760mm (H) × 480mm (W) × 505mm (D)
Weight
3.6kg
Warranty
20 years
Specification
Details
Purpose / Benefit
Seat Height
430mm
Correct height for students aged 11–14 at standard secondary desks
Material
30% recycled high-impact polypropylene
Durable and lightweight for daily secondary school use
Construction
One-piece mould with gas-injected legs
Removes weak points and increases long-term structural strength
Ventilation
Back ventilation window
Supports comfort during extended lessons and exam sessions
Edge Profile
Waterfall seat edge
Helps reduce pressure on the back of the legs and supports circulation
Anti-static / Anti-rocking
Yes
Improves stability and safety in lively secondary environments
Stackability
Up to 12 chairs
Supports efficient storage for exam halls and multi-use spaces
Outdoor Suitability
UV filter
Suitable for occasional use in sheltered outdoor study or breakout areas
Weight Capacity
Up to 204kg
Provides added reassurance for secondary and mixed-use environments
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Meets UK standards for posture, strength and durability in education settings
Colour
Aqua Blue
Fresh, modern colour for coordinated secondary spaces

Dimensions follow DfE size mark 5 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: Aqua Blue Postura+ 430mm Classroom Chair (Ages 11–14)

Q: Which age group is the Aqua Blue 430mm Postura+ chair designed for?

A: It is designed for students aged approximately 11–14 and matches DfE size mark 5 guidance for secondary seating.

Q: Is this chair suitable for secondary classrooms and labs?

A: Yes—its 430mm height and robust construction make it ideal for standard classrooms, science labs, ICT rooms and exam halls.

Q: How strong is the Aqua Blue Postura+ 430mm chair?

A: The chair is weight tested to support up to 204kg, giving excellent reassurance for secondary and mixed-use environments.

Q: Do Cobolt offer free delivery on these chairs?

A: Yes—Cobolt provides free UK mainland delivery on all Postura+ chairs, helping schools and MATs keep budgeting simple.

Q: How easy is it to maintain and clean the chair?

A: The stain-resistant, non-porous shell wipes clean quickly with mild detergents, ideal for science, art and general classroom use.

Q: Can the Aqua Blue chairs be stacked for storage and exams?

A: Yes—up to 12 chairs can be stacked safely, which is particularly useful for exam season and reconfigurable spaces.

Q: Are these chairs suitable for occasional outdoor use?

A: The UV filter makes them suitable for occasional sheltered outdoor learning, although indoor storage is recommended for longevity.

Q: What does the 20-year warranty cover?

A: It covers structural integrity and material performance under normal educational use, reflecting the long-term durability of the Postura+ range.

Overview

Product Overview: Aqua Blue Postura+ Chair (430mm, Ages 11–14)

The Aqua Blue Postura+ 430mm chair provides specification-ready seating for secondary students aged 11–14, combining proven ergonomic support with a clean, modern colour that suits contemporary classrooms, labs and ICT spaces.

Ergonomic Design for Secondary Pupils

  • 430mm seat height aligned with DfE size mark 5 for ages 11–14
  • Curved backrest promoting stable, upright sitting posture
  • Waterfall seat front reducing pressure on legs during longer lessons

Engineered for Daily Secondary Use

  • One-piece injection-moulded shell with no loose screws or joints
  • Gas-injected legs adding rigidity for frequent movement and stacking
  • Independently weight tested to support up to 204kg

Aqua Blue for Modern Learning Environments

The Aqua Blue finish brings a fresh, contemporary look to secondary classrooms, science labs, language rooms and ICT suites, helping create cohesive, professional learning environments across year groups.

Why Cobolt: Service, Experience & Delivery

  • Free UK mainland delivery on all Aqua Blue Postura+ chairs
  • Over 50 years supporting schools, academies, colleges and public-sector estates
  • Tracked, well-managed deliveries coordinated by Cobolt’s in-house logistics team
  • Dedicated account managers providing knowledgeable, personal support from enquiry to aftercare

Features & Benefits

Where the Aqua Blue Postura+ 430mm Chair Performs Best

The Aqua Blue Postura+ 430mm chair is ideal for secondary classrooms, science labs, ICT rooms, language suites, sixth-form study spaces and exam halls. Its height and shaping support students aged 11–14 through extended lessons, assessments and independent study, while the Aqua Blue finish complements modern, coordinated interiors.

Key Features

  • 430mm seat height – designed for students aged 11–14 at standard secondary desk heights.
  • One-piece polypropylene shell – no fixings or joints to loosen over time.
  • 30% recycled high-impact material – balances durability with a lower-impact material choice.
  • Gas-injected legs – enhanced strength for daily stacking, moving and intensive use.
  • Ventilated back window – helps regulate comfort during longer lessons and exams.
  • Anti-static and anti-rocking design – supports stability in busy secondary classrooms.
  • Stain-resistant, non-porous surface – wipes clean quickly after practical work and daily use.
  • UV filter – suitable for occasional sheltered outdoor or breakout learning.
  • Stackable up to 12 high – ideal for exam storage, halls and multi-purpose spaces.
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

  • Free UK mainland delivery on every Aqua Blue Postura+ 430mm chair.
  • Five decades of sector expertise guiding schools, academies and MATs on sizing and layouts.
  • Tracked, dependable delivery overseen by Cobolt’s own logistics and customer service team.
  • Account-managed support focused on clear communication, simplified ordering and confident rollout.

Safety & Warranty

Safety & Warranty for Aqua Blue Postura+ 430mm Chairs

  • BS EN 1729–1:2015 certified for secondary-age ergonomics and posture support
  • BS EN 1729–2:2023 compliant for strength, stability and long-term durability
  • Anti-rocking base geometry helping minimise tipping risk in busy secondary classrooms
  • Non-porous, stain-resistant shell supporting fast, hygienic cleaning routines
  • 20-year warranty covering structural integrity and material performance under normal educational use

Specification Dimensions

The Aqua Blue Postura+ 430mm chair is designed for secondary pupils, combining tested ergonomics with robust, easy-care construction. These specifications help estates teams and MATs plan standardised seating for KS3 and KS4.

Dimensions
760mm (H) × 480mm (W) × 505mm (D)
Weight
3.6kg
Warranty
20 years
Specification
Details
Purpose / Benefit
Seat Height
430mm
Correct height for students aged 11–14 at standard secondary desks
Material
30% recycled high-impact polypropylene
Durable and lightweight for daily secondary school use
Construction
One-piece mould with gas-injected legs
Removes weak points and increases long-term structural strength
Ventilation
Back ventilation window
Supports comfort during extended lessons and exam sessions
Edge Profile
Waterfall seat edge
Helps reduce pressure on the back of the legs and supports circulation
Anti-static / Anti-rocking
Yes
Improves stability and safety in lively secondary environments
Stackability
Up to 12 chairs
Supports efficient storage for exam halls and multi-use spaces
Outdoor Suitability
UV filter
Suitable for occasional use in sheltered outdoor study or breakout areas
Weight Capacity
Up to 204kg
Provides added reassurance for secondary and mixed-use environments
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Meets UK standards for posture, strength and durability in education settings
Colour
Aqua Blue
Fresh, modern colour for coordinated secondary spaces

Dimensions follow DfE size mark 5 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: Aqua Blue Postura+ 430mm Classroom Chair (Ages 11–14)

Q: Which age group is the Aqua Blue 430mm Postura+ chair designed for?

A: It is designed for students aged approximately 11–14 and matches DfE size mark 5 guidance for secondary seating.

Q: Is this chair suitable for secondary classrooms and labs?

A: Yes—its 430mm height and robust construction make it ideal for standard classrooms, science labs, ICT rooms and exam halls.

Q: How strong is the Aqua Blue Postura+ 430mm chair?

A: The chair is weight tested to support up to 204kg, giving excellent reassurance for secondary and mixed-use environments.

Q: Do Cobolt offer free delivery on these chairs?

A: Yes—Cobolt provides free UK mainland delivery on all Postura+ chairs, helping schools and MATs keep budgeting simple.

Q: How easy is it to maintain and clean the chair?

A: The stain-resistant, non-porous shell wipes clean quickly with mild detergents, ideal for science, art and general classroom use.

Q: Can the Aqua Blue chairs be stacked for storage and exams?

A: Yes—up to 12 chairs can be stacked safely, which is particularly useful for exam season and reconfigurable spaces.

Q: Are these chairs suitable for occasional outdoor use?

A: The UV filter makes them suitable for occasional sheltered outdoor learning, although indoor storage is recommended for longevity.

Q: What does the 20-year warranty cover?

A: It covers structural integrity and material performance under normal educational use, reflecting the long-term durability of the Postura+ range.

Aqua Blue Postura+ Ergonomic One Piece Classroom Chair - 11-14 Years

Product code: KI1114AQ
The Aqua Blue Postura+ 430mm Classroom Chair is designed specifically for secondary pupils aged 11–14, offering reliable ergonomic support for longer...

Inc VAT

Exc VAT

£42.00

£35.00

Height by Age - 11-14 Years
Colours - Aqua Blue

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Overview

Features

Safety & Warranty

Specifications & Dimensions

Delivery & Returns

Product FAQs

Product Overview: Aqua Blue Postura+ Chair (430mm, Ages 11–14)

The Aqua Blue Postura+ 430mm chair provides specification-ready seating for secondary students aged 11–14, combining proven ergonomic support with a clean, modern colour that suits contemporary classrooms, labs and ICT spaces.

Ergonomic Design for Secondary Pupils

  • 430mm seat height aligned with DfE size mark 5 for ages 11–14
  • Curved backrest promoting stable, upright sitting posture
  • Waterfall seat front reducing pressure on legs during longer lessons

Engineered for Daily Secondary Use

  • One-piece injection-moulded shell with no loose screws or joints
  • Gas-injected legs adding rigidity for frequent movement and stacking
  • Independently weight tested to support up to 204kg

Aqua Blue for Modern Learning Environments

The Aqua Blue finish brings a fresh, contemporary look to secondary classrooms, science labs, language rooms and ICT suites, helping create cohesive, professional learning environments across year groups.

Why Cobolt: Service, Experience & Delivery

  • Free UK mainland delivery on all Aqua Blue Postura+ chairs
  • Over 50 years supporting schools, academies, colleges and public-sector estates
  • Tracked, well-managed deliveries coordinated by Cobolt’s in-house logistics team
  • Dedicated account managers providing knowledgeable, personal support from enquiry to aftercare

Where the Aqua Blue Postura+ 430mm Chair Performs Best

The Aqua Blue Postura+ 430mm chair is ideal for secondary classrooms, science labs, ICT rooms, language suites, sixth-form study spaces and exam halls. Its height and shaping support students aged 11–14 through extended lessons, assessments and independent study, while the Aqua Blue finish complements modern, coordinated interiors.

Key Features

  • 430mm seat height – designed for students aged 11–14 at standard secondary desk heights.
  • One-piece polypropylene shell – no fixings or joints to loosen over time.
  • 30% recycled high-impact material – balances durability with a lower-impact material choice.
  • Gas-injected legs – enhanced strength for daily stacking, moving and intensive use.
  • Ventilated back window – helps regulate comfort during longer lessons and exams.
  • Anti-static and anti-rocking design – supports stability in busy secondary classrooms.
  • Stain-resistant, non-porous surface – wipes clean quickly after practical work and daily use.
  • UV filter – suitable for occasional sheltered outdoor or breakout learning.
  • Stackable up to 12 high – ideal for exam storage, halls and multi-purpose spaces.
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

  • Free UK mainland delivery on every Aqua Blue Postura+ 430mm chair.
  • Five decades of sector expertise guiding schools, academies and MATs on sizing and layouts.
  • Tracked, dependable delivery overseen by Cobolt’s own logistics and customer service team.
  • Account-managed support focused on clear communication, simplified ordering and confident rollout.

Safety & Warranty for Aqua Blue Postura+ 430mm Chairs

  • BS EN 1729–1:2015 certified for secondary-age ergonomics and posture support
  • BS EN 1729–2:2023 compliant for strength, stability and long-term durability
  • Anti-rocking base geometry helping minimise tipping risk in busy secondary classrooms
  • Non-porous, stain-resistant shell supporting fast, hygienic cleaning routines
  • 20-year warranty covering structural integrity and material performance under normal educational use

The Aqua Blue Postura+ 430mm chair is designed for secondary pupils, combining tested ergonomics with robust, easy-care construction. These specifications help estates teams and MATs plan standardised seating for KS3 and KS4.

Dimensions
760mm (H) × 480mm (W) × 505mm (D)
Weight
3.6kg
Warranty
20 years
Specification
Details
Purpose / Benefit
Seat Height
430mm
Correct height for students aged 11–14 at standard secondary desks
Material
30% recycled high-impact polypropylene
Durable and lightweight for daily secondary school use
Construction
One-piece mould with gas-injected legs
Removes weak points and increases long-term structural strength
Ventilation
Back ventilation window
Supports comfort during extended lessons and exam sessions
Edge Profile
Waterfall seat edge
Helps reduce pressure on the back of the legs and supports circulation
Anti-static / Anti-rocking
Yes
Improves stability and safety in lively secondary environments
Stackability
Up to 12 chairs
Supports efficient storage for exam halls and multi-use spaces
Outdoor Suitability
UV filter
Suitable for occasional use in sheltered outdoor study or breakout areas
Weight Capacity
Up to 204kg
Provides added reassurance for secondary and mixed-use environments
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Meets UK standards for posture, strength and durability in education settings
Colour
Aqua Blue
Fresh, modern colour for coordinated secondary spaces

Dimensions follow DfE size mark 5 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: Aqua Blue Postura+ 430mm Classroom Chair (Ages 11–14)

Q: Which age group is the Aqua Blue 430mm Postura+ chair designed for?

A: It is designed for students aged approximately 11–14 and matches DfE size mark 5 guidance for secondary seating.

Q: Is this chair suitable for secondary classrooms and labs?

A: Yes—its 430mm height and robust construction make it ideal for standard classrooms, science labs, ICT rooms and exam halls.

Q: How strong is the Aqua Blue Postura+ 430mm chair?

A: The chair is weight tested to support up to 204kg, giving excellent reassurance for secondary and mixed-use environments.

Q: Do Cobolt offer free delivery on these chairs?

A: Yes—Cobolt provides free UK mainland delivery on all Postura+ chairs, helping schools and MATs keep budgeting simple.

Q: How easy is it to maintain and clean the chair?

A: The stain-resistant, non-porous shell wipes clean quickly with mild detergents, ideal for science, art and general classroom use.

Q: Can the Aqua Blue chairs be stacked for storage and exams?

A: Yes—up to 12 chairs can be stacked safely, which is particularly useful for exam season and reconfigurable spaces.

Q: Are these chairs suitable for occasional outdoor use?

A: The UV filter makes them suitable for occasional sheltered outdoor learning, although indoor storage is recommended for longevity.

Q: What does the 20-year warranty cover?

A: It covers structural integrity and material performance under normal educational use, reflecting the long-term durability of the Postura+ range.

Overview

Product Overview: Aqua Blue Postura+ Chair (430mm, Ages 11–14)

The Aqua Blue Postura+ 430mm chair provides specification-ready seating for secondary students aged 11–14, combining proven ergonomic support with a clean, modern colour that suits contemporary classrooms, labs and ICT spaces.

Ergonomic Design for Secondary Pupils

  • 430mm seat height aligned with DfE size mark 5 for ages 11–14
  • Curved backrest promoting stable, upright sitting posture
  • Waterfall seat front reducing pressure on legs during longer lessons

Engineered for Daily Secondary Use

  • One-piece injection-moulded shell with no loose screws or joints
  • Gas-injected legs adding rigidity for frequent movement and stacking
  • Independently weight tested to support up to 204kg

Aqua Blue for Modern Learning Environments

The Aqua Blue finish brings a fresh, contemporary look to secondary classrooms, science labs, language rooms and ICT suites, helping create cohesive, professional learning environments across year groups.

Why Cobolt: Service, Experience & Delivery

  • Free UK mainland delivery on all Aqua Blue Postura+ chairs
  • Over 50 years supporting schools, academies, colleges and public-sector estates
  • Tracked, well-managed deliveries coordinated by Cobolt’s in-house logistics team
  • Dedicated account managers providing knowledgeable, personal support from enquiry to aftercare

Features & Benefits

Where the Aqua Blue Postura+ 430mm Chair Performs Best

The Aqua Blue Postura+ 430mm chair is ideal for secondary classrooms, science labs, ICT rooms, language suites, sixth-form study spaces and exam halls. Its height and shaping support students aged 11–14 through extended lessons, assessments and independent study, while the Aqua Blue finish complements modern, coordinated interiors.

Key Features

  • 430mm seat height – designed for students aged 11–14 at standard secondary desk heights.
  • One-piece polypropylene shell – no fixings or joints to loosen over time.
  • 30% recycled high-impact material – balances durability with a lower-impact material choice.
  • Gas-injected legs – enhanced strength for daily stacking, moving and intensive use.
  • Ventilated back window – helps regulate comfort during longer lessons and exams.
  • Anti-static and anti-rocking design – supports stability in busy secondary classrooms.
  • Stain-resistant, non-porous surface – wipes clean quickly after practical work and daily use.
  • UV filter – suitable for occasional sheltered outdoor or breakout learning.
  • Stackable up to 12 high – ideal for exam storage, halls and multi-purpose spaces.
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

  • Free UK mainland delivery on every Aqua Blue Postura+ 430mm chair.
  • Five decades of sector expertise guiding schools, academies and MATs on sizing and layouts.
  • Tracked, dependable delivery overseen by Cobolt’s own logistics and customer service team.
  • Account-managed support focused on clear communication, simplified ordering and confident rollout.

Safety & Warranty

Safety & Warranty for Aqua Blue Postura+ 430mm Chairs

  • BS EN 1729–1:2015 certified for secondary-age ergonomics and posture support
  • BS EN 1729–2:2023 compliant for strength, stability and long-term durability
  • Anti-rocking base geometry helping minimise tipping risk in busy secondary classrooms
  • Non-porous, stain-resistant shell supporting fast, hygienic cleaning routines
  • 20-year warranty covering structural integrity and material performance under normal educational use

Specification Dimensions

The Aqua Blue Postura+ 430mm chair is designed for secondary pupils, combining tested ergonomics with robust, easy-care construction. These specifications help estates teams and MATs plan standardised seating for KS3 and KS4.

Dimensions
760mm (H) × 480mm (W) × 505mm (D)
Weight
3.6kg
Warranty
20 years
Specification
Details
Purpose / Benefit
Seat Height
430mm
Correct height for students aged 11–14 at standard secondary desks
Material
30% recycled high-impact polypropylene
Durable and lightweight for daily secondary school use
Construction
One-piece mould with gas-injected legs
Removes weak points and increases long-term structural strength
Ventilation
Back ventilation window
Supports comfort during extended lessons and exam sessions
Edge Profile
Waterfall seat edge
Helps reduce pressure on the back of the legs and supports circulation
Anti-static / Anti-rocking
Yes
Improves stability and safety in lively secondary environments
Stackability
Up to 12 chairs
Supports efficient storage for exam halls and multi-use spaces
Outdoor Suitability
UV filter
Suitable for occasional use in sheltered outdoor study or breakout areas
Weight Capacity
Up to 204kg
Provides added reassurance for secondary and mixed-use environments
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Meets UK standards for posture, strength and durability in education settings
Colour
Aqua Blue
Fresh, modern colour for coordinated secondary spaces

Dimensions follow DfE size mark 5 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: Aqua Blue Postura+ 430mm Classroom Chair (Ages 11–14)

Q: Which age group is the Aqua Blue 430mm Postura+ chair designed for?

A: It is designed for students aged approximately 11–14 and matches DfE size mark 5 guidance for secondary seating.

Q: Is this chair suitable for secondary classrooms and labs?

A: Yes—its 430mm height and robust construction make it ideal for standard classrooms, science labs, ICT rooms and exam halls.

Q: How strong is the Aqua Blue Postura+ 430mm chair?

A: The chair is weight tested to support up to 204kg, giving excellent reassurance for secondary and mixed-use environments.

Q: Do Cobolt offer free delivery on these chairs?

A: Yes—Cobolt provides free UK mainland delivery on all Postura+ chairs, helping schools and MATs keep budgeting simple.

Q: How easy is it to maintain and clean the chair?

A: The stain-resistant, non-porous shell wipes clean quickly with mild detergents, ideal for science, art and general classroom use.

Q: Can the Aqua Blue chairs be stacked for storage and exams?

A: Yes—up to 12 chairs can be stacked safely, which is particularly useful for exam season and reconfigurable spaces.

Q: Are these chairs suitable for occasional outdoor use?

A: The UV filter makes them suitable for occasional sheltered outdoor learning, although indoor storage is recommended for longevity.

Q: What does the 20-year warranty cover?

A: It covers structural integrity and material performance under normal educational use, reflecting the long-term durability of the Postura+ range.

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