A navy blue ergonomic chair in a contemporary library study area, set on polished concrete flooring near bookshelves and a wooden round table.
Dark blue Postura+ chair with a contoured seat and sturdy legs, built for long-term use in classrooms and public spaces.
KI Europe dark blue chair with promotional banners and a circular inset showing stackable multicoloured chairs.
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: Dark Blue Postura+ Chair (430mm, Ages 11–14)

The Dark Blue (Ink) Postura+ 430mm chair is the backbone of the British education system. Combining a smart, uniform-compliant aesthetic with rugged durability, it is the number one specification for core subject classrooms and large-scale exam venues where minimising visual distraction is essential.

The Academic Standard

  • 430mm seat height (DfE Size 6) tailored for the posture of 11–14 year olds
  • Ergonomic lumbar curvature supports concentration during long exam sittings
  • Waterfall seat edge prevents leg numbness, aiding focus in double periods

Practicality for Busy Schools

  • Dark Blue finish is excellent at hiding ink stains and denim dye transfer
  • Single-piece construction means no maintenance is required—ever
  • Impact-resistant polypropylene handles the rough-and-tumble of school life

Exam Hall Efficiency

Speed matters in multi-use spaces. These chairs stack 12 high vertically, allowing caretakers to transform a dining hall into an exam room and back again with minimal effort and storage footprint.

The Cobolt Guarantee

  • Free UK Mainland Delivery: We pay the shipping, providing a transparent, budget-friendly price
  • Reliable Heritage: We supply the genuine UK-made article, ensuring consistent colour matching
  • Seamless Logistics: Deliveries scheduled to align with your term times and exams
  • 20-Year Warranty: A long-term promise of quality on every single chair

Where is this Dark Blue stacking chair used?

The Dark Blue Postura+ is the versatile workhorse of the campus. It is the primary choice for Maths and English departments, exam halls, and sixth form seminar rooms. Its professional appearance also makes it suitable for staff training rooms, community centres, and church halls that require smart, stackable seating.

Key Features

  • Regulatory Compliance (Size 6) – 430mm seat height meets BS EN 1729 guidelines for Key Stage 3 (11-14 years).
  • Superior Stacking – Stacks 12 high safely, essential for venues that change function daily (e.g., dining to drama).
  • Ink Resistance – The dark colourway is the best option for concealing accidental pen marks and general wear.
  • Indestructible Build – Gas-injected legs provide immense strength without the need for metal frames.
  • Safety Engineered – Anti-rock rear legs prevent tipping, a crucial safety feature for active students.
  • Hygiene Ready – The smooth, non-porous surface withstands rigorous cleaning protocols.
  • Eco-Friendly – Manufactured in the UK using 30% recycled content and is 100% recyclable.
  • Lightweight Handling – Weighs just 3.6kg, allowing students to help reconfigure classrooms easily.
20-year warranty icon
20-year warranty
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
UK manufactured

Cobolt Service & Ethos: Here to Make It Easy

  • Free Delivery (UK Mainland): We believe in simple pricing. We cover the transport costs so you can maximise your furniture budget.
  • Account Accountability: You will have a dedicated contact to manage your order from the moment you click buy.
  • Logistics for Schools: We understand the school day. We plan deliveries to minimise disruption to learning.
  • Proven Quality: We only stock items with a track record of survival in British schools.

Built for Safety. Backed for Years.

  • Every Cobolt product meets stringent institutional standards. This chair is certified to BS EN 1729 Part 1 & 2, guaranteeing it meets the size and strength requirements for educational use.
  • We prioritise classroom safety: the anti-rocking design prevents dangerous leaning, and the anti-static material is safe for IT suites.
  • Hygiene is effortless. The chemically resistant polypropylene allows for deep cleaning with standard detergents, maintaining a sanitary environment.
  • We back this product with a massive 20-year manufacturer's warranty. This covers the structural shell and legs, ensuring your investment is secure for decades.
  • The chair is tested to support a static weight of 204kg, making it a safe and reliable option for students, staff, and visitors.

The Dark Blue (Ink) Postura+ 430mm chair is the standard-bearer for durability in Year 7–9 classrooms. These specifications ensure it meets the practical and ergonomic demands of secondary education.

Dimensions
760mm (H) × 480mm (W) × 505mm (D)
Weight
3.6kg
Warranty
20 years
Specification
Details
Purpose / Benefit
Seat Height
430mm
DfE Size 6 standard for ages 11–14
Material
30% recycled high-impact polypropylene
Extremely tough, sustainable, and wipe-clean
Construction
Single-piece gas injection mould
Zero maintenance; no screws or joints to fail
Ventilation
Lumbar ventilation window
Reduces heat build-up during exams
Edge Profile
Waterfall seat edge
Prevents pressure points behind the knees
Anti-static / Anti-rocking
Yes
Prevents tipping and reduces dust attraction
Stackability
Up to 12 chairs
Allows for rapid clearing of exam halls
Weight Capacity
204kg
Heavy-duty rating suitable for exams and public use
Outdoor Suitability
UV filter
Prevents blue fading during outdoor use
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Verified for UK school use
Colour
Dark Blue (Ink)
Classic academic finish that hides ink stains

Dimensions strictly follow DfE size mark guidelines. Minor variations may occur due to 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: The Best Dark Blue School Chair for Exams

Q: Is delivery included in the price?

A: Yes, Free UK Mainland Delivery is included. We cover the transport costs, providing a simple, all-inclusive price for your school budget.

Q: Why is Dark Blue the most common choice for schools?

A: It is the most practical colour. Dark Blue (Ink) looks professional, matches most uniforms, and is exceptional at hiding ballpoint pen marks and scuffs.

Q: Are these suitable for exam halls?

A: Yes. They are comfortable for long sittings and, crucially, can be stacked 12 high to clear the hall quickly for lunch or assemblies.

Q: Is this chair suitable for Year 7-9 students?

A: Yes. The 430mm seat height is the BS EN 1729 Size 6 standard, specifically designed for the ergonomics of 11-14 year olds.

Q: How robust are they?

A: Incredibly. They are moulded from a single piece of high-impact polypropylene with no screws or joints to fail. They are backed by a 20-year warranty.

Q: How easy are they to clean?

A: Very. The smooth surface is resistant to stains and can be wiped down easily. The dark colour reduces the visual frequency of cleaning required.

Q: Does the chair prevent rocking?

A: Yes. The rear legs are angled specifically to resist tipping back, which improves safety and focus in the classroom.

Q: Can I use them for community events?

A: Yes. The chair is rated to 204kg (32 stone) and offers a comfortable width for adults, making it perfect for PTA meetings or evening classes.

Q: Why choose Cobolt?

A: We are the education furniture experts. We offer Free UK Mainland Delivery, seamless logistics planning, and guaranteed UK-manufactured quality.

Overview

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

The Dark Blue (Ink) Postura+ 430mm chair is the backbone of the British education system. Combining a smart, uniform-compliant aesthetic with rugged durability, it is the number one specification for core subject classrooms and large-scale exam venues where minimising visual distraction is essential.

The Academic Standard

  • 430mm seat height (DfE Size 6) tailored for the posture of 11–14 year olds
  • Ergonomic lumbar curvature supports concentration during long exam sittings
  • Waterfall seat edge prevents leg numbness, aiding focus in double periods

Practicality for Busy Schools

  • Dark Blue finish is excellent at hiding ink stains and denim dye transfer
  • Single-piece construction means no maintenance is required—ever
  • Impact-resistant polypropylene handles the rough-and-tumble of school life

Exam Hall Efficiency

Speed matters in multi-use spaces. These chairs stack 12 high vertically, allowing caretakers to transform a dining hall into an exam room and back again with minimal effort and storage footprint.

The Cobolt Guarantee

  • Free UK Mainland Delivery: We pay the shipping, providing a transparent, budget-friendly price
  • Reliable Heritage: We supply the genuine UK-made article, ensuring consistent colour matching
  • Seamless Logistics: Deliveries scheduled to align with your term times and exams
  • 20-Year Warranty: A long-term promise of quality on every single chair

Features & Benefits

Where is this Dark Blue stacking chair used?

The Dark Blue Postura+ is the versatile workhorse of the campus. It is the primary choice for Maths and English departments, exam halls, and sixth form seminar rooms. Its professional appearance also makes it suitable for staff training rooms, community centres, and church halls that require smart, stackable seating.

Key Features

  • Regulatory Compliance (Size 6) – 430mm seat height meets BS EN 1729 guidelines for Key Stage 3 (11-14 years).
  • Superior Stacking – Stacks 12 high safely, essential for venues that change function daily (e.g., dining to drama).
  • Ink Resistance – The dark colourway is the best option for concealing accidental pen marks and general wear.
  • Indestructible Build – Gas-injected legs provide immense strength without the need for metal frames.
  • Safety Engineered – Anti-rock rear legs prevent tipping, a crucial safety feature for active students.
  • Hygiene Ready – The smooth, non-porous surface withstands rigorous cleaning protocols.
  • Eco-Friendly – Manufactured in the UK using 30% recycled content and is 100% recyclable.
  • Lightweight Handling – Weighs just 3.6kg, allowing students to help reconfigure classrooms easily.
20-year warranty icon
20-year warranty
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
UK manufactured

Cobolt Service & Ethos: Here to Make It Easy

  • Free Delivery (UK Mainland): We believe in simple pricing. We cover the transport costs so you can maximise your furniture budget.
  • Account Accountability: You will have a dedicated contact to manage your order from the moment you click buy.
  • Logistics for Schools: We understand the school day. We plan deliveries to minimise disruption to learning.
  • Proven Quality: We only stock items with a track record of survival in British schools.

Safety & Warranty

Built for Safety. Backed for Years.

  • Every Cobolt product meets stringent institutional standards. This chair is certified to BS EN 1729 Part 1 & 2, guaranteeing it meets the size and strength requirements for educational use.
  • We prioritise classroom safety: the anti-rocking design prevents dangerous leaning, and the anti-static material is safe for IT suites.
  • Hygiene is effortless. The chemically resistant polypropylene allows for deep cleaning with standard detergents, maintaining a sanitary environment.
  • We back this product with a massive 20-year manufacturer's warranty. This covers the structural shell and legs, ensuring your investment is secure for decades.
  • The chair is tested to support a static weight of 204kg, making it a safe and reliable option for students, staff, and visitors.

Specification Dimensions

The Dark Blue (Ink) Postura+ 430mm chair is the standard-bearer for durability in Year 7–9 classrooms. These specifications ensure it meets the practical and ergonomic demands of secondary education.

Dimensions
760mm (H) × 480mm (W) × 505mm (D)
Weight
3.6kg
Warranty
20 years
Specification
Details
Purpose / Benefit
Seat Height
430mm
DfE Size 6 standard for ages 11–14
Material
30% recycled high-impact polypropylene
Extremely tough, sustainable, and wipe-clean
Construction
Single-piece gas injection mould
Zero maintenance; no screws or joints to fail
Ventilation
Lumbar ventilation window
Reduces heat build-up during exams
Edge Profile
Waterfall seat edge
Prevents pressure points behind the knees
Anti-static / Anti-rocking
Yes
Prevents tipping and reduces dust attraction
Stackability
Up to 12 chairs
Allows for rapid clearing of exam halls
Weight Capacity
204kg
Heavy-duty rating suitable for exams and public use
Outdoor Suitability
UV filter
Prevents blue fading during outdoor use
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Verified for UK school use
Colour
Dark Blue (Ink)
Classic academic finish that hides ink stains

Dimensions strictly follow DfE size mark guidelines. Minor variations may occur due to 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: The Best Dark Blue School Chair for Exams

Q: Is delivery included in the price?

A: Yes, Free UK Mainland Delivery is included. We cover the transport costs, providing a simple, all-inclusive price for your school budget.

Q: Why is Dark Blue the most common choice for schools?

A: It is the most practical colour. Dark Blue (Ink) looks professional, matches most uniforms, and is exceptional at hiding ballpoint pen marks and scuffs.

Q: Are these suitable for exam halls?

A: Yes. They are comfortable for long sittings and, crucially, can be stacked 12 high to clear the hall quickly for lunch or assemblies.

Q: Is this chair suitable for Year 7-9 students?

A: Yes. The 430mm seat height is the BS EN 1729 Size 6 standard, specifically designed for the ergonomics of 11-14 year olds.

Q: How robust are they?

A: Incredibly. They are moulded from a single piece of high-impact polypropylene with no screws or joints to fail. They are backed by a 20-year warranty.

Q: How easy are they to clean?

A: Very. The smooth surface is resistant to stains and can be wiped down easily. The dark colour reduces the visual frequency of cleaning required.

Q: Does the chair prevent rocking?

A: Yes. The rear legs are angled specifically to resist tipping back, which improves safety and focus in the classroom.

Q: Can I use them for community events?

A: Yes. The chair is rated to 204kg (32 stone) and offers a comfortable width for adults, making it perfect for PTA meetings or evening classes.

Q: Why choose Cobolt?

A: We are the education furniture experts. We offer Free UK Mainland Delivery, seamless logistics planning, and guaranteed UK-manufactured quality.

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

Product code: KI1114DB
Establish a tone of academic focus and professionalism with the Postura+ Ergonomic Chair in Dark Blue. Ideally dimensioned for 11-14 year olds (Size 6...

Inc VAT

Exc VAT

£42.00

£35.00

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

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Overview

Features

Safety & Warranty

Specifications & Dimensions

Delivery & Returns

Product FAQs

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

The Dark Blue (Ink) Postura+ 430mm chair is the backbone of the British education system. Combining a smart, uniform-compliant aesthetic with rugged durability, it is the number one specification for core subject classrooms and large-scale exam venues where minimising visual distraction is essential.

The Academic Standard

  • 430mm seat height (DfE Size 6) tailored for the posture of 11–14 year olds
  • Ergonomic lumbar curvature supports concentration during long exam sittings
  • Waterfall seat edge prevents leg numbness, aiding focus in double periods

Practicality for Busy Schools

  • Dark Blue finish is excellent at hiding ink stains and denim dye transfer
  • Single-piece construction means no maintenance is required—ever
  • Impact-resistant polypropylene handles the rough-and-tumble of school life

Exam Hall Efficiency

Speed matters in multi-use spaces. These chairs stack 12 high vertically, allowing caretakers to transform a dining hall into an exam room and back again with minimal effort and storage footprint.

The Cobolt Guarantee

  • Free UK Mainland Delivery: We pay the shipping, providing a transparent, budget-friendly price
  • Reliable Heritage: We supply the genuine UK-made article, ensuring consistent colour matching
  • Seamless Logistics: Deliveries scheduled to align with your term times and exams
  • 20-Year Warranty: A long-term promise of quality on every single chair

Where is this Dark Blue stacking chair used?

The Dark Blue Postura+ is the versatile workhorse of the campus. It is the primary choice for Maths and English departments, exam halls, and sixth form seminar rooms. Its professional appearance also makes it suitable for staff training rooms, community centres, and church halls that require smart, stackable seating.

Key Features

  • Regulatory Compliance (Size 6) – 430mm seat height meets BS EN 1729 guidelines for Key Stage 3 (11-14 years).
  • Superior Stacking – Stacks 12 high safely, essential for venues that change function daily (e.g., dining to drama).
  • Ink Resistance – The dark colourway is the best option for concealing accidental pen marks and general wear.
  • Indestructible Build – Gas-injected legs provide immense strength without the need for metal frames.
  • Safety Engineered – Anti-rock rear legs prevent tipping, a crucial safety feature for active students.
  • Hygiene Ready – The smooth, non-porous surface withstands rigorous cleaning protocols.
  • Eco-Friendly – Manufactured in the UK using 30% recycled content and is 100% recyclable.
  • Lightweight Handling – Weighs just 3.6kg, allowing students to help reconfigure classrooms easily.
20-year warranty icon
20-year warranty
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
UK manufactured

Cobolt Service & Ethos: Here to Make It Easy

  • Free Delivery (UK Mainland): We believe in simple pricing. We cover the transport costs so you can maximise your furniture budget.
  • Account Accountability: You will have a dedicated contact to manage your order from the moment you click buy.
  • Logistics for Schools: We understand the school day. We plan deliveries to minimise disruption to learning.
  • Proven Quality: We only stock items with a track record of survival in British schools.

Built for Safety. Backed for Years.

  • Every Cobolt product meets stringent institutional standards. This chair is certified to BS EN 1729 Part 1 & 2, guaranteeing it meets the size and strength requirements for educational use.
  • We prioritise classroom safety: the anti-rocking design prevents dangerous leaning, and the anti-static material is safe for IT suites.
  • Hygiene is effortless. The chemically resistant polypropylene allows for deep cleaning with standard detergents, maintaining a sanitary environment.
  • We back this product with a massive 20-year manufacturer's warranty. This covers the structural shell and legs, ensuring your investment is secure for decades.
  • The chair is tested to support a static weight of 204kg, making it a safe and reliable option for students, staff, and visitors.

The Dark Blue (Ink) Postura+ 430mm chair is the standard-bearer for durability in Year 7–9 classrooms. These specifications ensure it meets the practical and ergonomic demands of secondary education.

Dimensions
760mm (H) × 480mm (W) × 505mm (D)
Weight
3.6kg
Warranty
20 years
Specification
Details
Purpose / Benefit
Seat Height
430mm
DfE Size 6 standard for ages 11–14
Material
30% recycled high-impact polypropylene
Extremely tough, sustainable, and wipe-clean
Construction
Single-piece gas injection mould
Zero maintenance; no screws or joints to fail
Ventilation
Lumbar ventilation window
Reduces heat build-up during exams
Edge Profile
Waterfall seat edge
Prevents pressure points behind the knees
Anti-static / Anti-rocking
Yes
Prevents tipping and reduces dust attraction
Stackability
Up to 12 chairs
Allows for rapid clearing of exam halls
Weight Capacity
204kg
Heavy-duty rating suitable for exams and public use
Outdoor Suitability
UV filter
Prevents blue fading during outdoor use
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Verified for UK school use
Colour
Dark Blue (Ink)
Classic academic finish that hides ink stains

Dimensions strictly follow DfE size mark guidelines. Minor variations may occur due to 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: The Best Dark Blue School Chair for Exams

Q: Is delivery included in the price?

A: Yes, Free UK Mainland Delivery is included. We cover the transport costs, providing a simple, all-inclusive price for your school budget.

Q: Why is Dark Blue the most common choice for schools?

A: It is the most practical colour. Dark Blue (Ink) looks professional, matches most uniforms, and is exceptional at hiding ballpoint pen marks and scuffs.

Q: Are these suitable for exam halls?

A: Yes. They are comfortable for long sittings and, crucially, can be stacked 12 high to clear the hall quickly for lunch or assemblies.

Q: Is this chair suitable for Year 7-9 students?

A: Yes. The 430mm seat height is the BS EN 1729 Size 6 standard, specifically designed for the ergonomics of 11-14 year olds.

Q: How robust are they?

A: Incredibly. They are moulded from a single piece of high-impact polypropylene with no screws or joints to fail. They are backed by a 20-year warranty.

Q: How easy are they to clean?

A: Very. The smooth surface is resistant to stains and can be wiped down easily. The dark colour reduces the visual frequency of cleaning required.

Q: Does the chair prevent rocking?

A: Yes. The rear legs are angled specifically to resist tipping back, which improves safety and focus in the classroom.

Q: Can I use them for community events?

A: Yes. The chair is rated to 204kg (32 stone) and offers a comfortable width for adults, making it perfect for PTA meetings or evening classes.

Q: Why choose Cobolt?

A: We are the education furniture experts. We offer Free UK Mainland Delivery, seamless logistics planning, and guaranteed UK-manufactured quality.

Overview

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

The Dark Blue (Ink) Postura+ 430mm chair is the backbone of the British education system. Combining a smart, uniform-compliant aesthetic with rugged durability, it is the number one specification for core subject classrooms and large-scale exam venues where minimising visual distraction is essential.

The Academic Standard

  • 430mm seat height (DfE Size 6) tailored for the posture of 11–14 year olds
  • Ergonomic lumbar curvature supports concentration during long exam sittings
  • Waterfall seat edge prevents leg numbness, aiding focus in double periods

Practicality for Busy Schools

  • Dark Blue finish is excellent at hiding ink stains and denim dye transfer
  • Single-piece construction means no maintenance is required—ever
  • Impact-resistant polypropylene handles the rough-and-tumble of school life

Exam Hall Efficiency

Speed matters in multi-use spaces. These chairs stack 12 high vertically, allowing caretakers to transform a dining hall into an exam room and back again with minimal effort and storage footprint.

The Cobolt Guarantee

  • Free UK Mainland Delivery: We pay the shipping, providing a transparent, budget-friendly price
  • Reliable Heritage: We supply the genuine UK-made article, ensuring consistent colour matching
  • Seamless Logistics: Deliveries scheduled to align with your term times and exams
  • 20-Year Warranty: A long-term promise of quality on every single chair

Features & Benefits

Where is this Dark Blue stacking chair used?

The Dark Blue Postura+ is the versatile workhorse of the campus. It is the primary choice for Maths and English departments, exam halls, and sixth form seminar rooms. Its professional appearance also makes it suitable for staff training rooms, community centres, and church halls that require smart, stackable seating.

Key Features

  • Regulatory Compliance (Size 6) – 430mm seat height meets BS EN 1729 guidelines for Key Stage 3 (11-14 years).
  • Superior Stacking – Stacks 12 high safely, essential for venues that change function daily (e.g., dining to drama).
  • Ink Resistance – The dark colourway is the best option for concealing accidental pen marks and general wear.
  • Indestructible Build – Gas-injected legs provide immense strength without the need for metal frames.
  • Safety Engineered – Anti-rock rear legs prevent tipping, a crucial safety feature for active students.
  • Hygiene Ready – The smooth, non-porous surface withstands rigorous cleaning protocols.
  • Eco-Friendly – Manufactured in the UK using 30% recycled content and is 100% recyclable.
  • Lightweight Handling – Weighs just 3.6kg, allowing students to help reconfigure classrooms easily.
20-year warranty icon
20-year warranty
Free delivery icon
Free UK Mainland Delivery
UK manufactured icon
UK manufactured

Cobolt Service & Ethos: Here to Make It Easy

  • Free Delivery (UK Mainland): We believe in simple pricing. We cover the transport costs so you can maximise your furniture budget.
  • Account Accountability: You will have a dedicated contact to manage your order from the moment you click buy.
  • Logistics for Schools: We understand the school day. We plan deliveries to minimise disruption to learning.
  • Proven Quality: We only stock items with a track record of survival in British schools.

Safety & Warranty

Built for Safety. Backed for Years.

  • Every Cobolt product meets stringent institutional standards. This chair is certified to BS EN 1729 Part 1 & 2, guaranteeing it meets the size and strength requirements for educational use.
  • We prioritise classroom safety: the anti-rocking design prevents dangerous leaning, and the anti-static material is safe for IT suites.
  • Hygiene is effortless. The chemically resistant polypropylene allows for deep cleaning with standard detergents, maintaining a sanitary environment.
  • We back this product with a massive 20-year manufacturer's warranty. This covers the structural shell and legs, ensuring your investment is secure for decades.
  • The chair is tested to support a static weight of 204kg, making it a safe and reliable option for students, staff, and visitors.

Specification Dimensions

The Dark Blue (Ink) Postura+ 430mm chair is the standard-bearer for durability in Year 7–9 classrooms. These specifications ensure it meets the practical and ergonomic demands of secondary education.

Dimensions
760mm (H) × 480mm (W) × 505mm (D)
Weight
3.6kg
Warranty
20 years
Specification
Details
Purpose / Benefit
Seat Height
430mm
DfE Size 6 standard for ages 11–14
Material
30% recycled high-impact polypropylene
Extremely tough, sustainable, and wipe-clean
Construction
Single-piece gas injection mould
Zero maintenance; no screws or joints to fail
Ventilation
Lumbar ventilation window
Reduces heat build-up during exams
Edge Profile
Waterfall seat edge
Prevents pressure points behind the knees
Anti-static / Anti-rocking
Yes
Prevents tipping and reduces dust attraction
Stackability
Up to 12 chairs
Allows for rapid clearing of exam halls
Weight Capacity
204kg
Heavy-duty rating suitable for exams and public use
Outdoor Suitability
UV filter
Prevents blue fading during outdoor use
Compliance
BS EN 1729–1:2015 / BS EN 1729–2:2023
Verified for UK school use
Colour
Dark Blue (Ink)
Classic academic finish that hides ink stains

Dimensions strictly follow DfE size mark guidelines. Minor variations may occur due to 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: The Best Dark Blue School Chair for Exams

Q: Is delivery included in the price?

A: Yes, Free UK Mainland Delivery is included. We cover the transport costs, providing a simple, all-inclusive price for your school budget.

Q: Why is Dark Blue the most common choice for schools?

A: It is the most practical colour. Dark Blue (Ink) looks professional, matches most uniforms, and is exceptional at hiding ballpoint pen marks and scuffs.

Q: Are these suitable for exam halls?

A: Yes. They are comfortable for long sittings and, crucially, can be stacked 12 high to clear the hall quickly for lunch or assemblies.

Q: Is this chair suitable for Year 7-9 students?

A: Yes. The 430mm seat height is the BS EN 1729 Size 6 standard, specifically designed for the ergonomics of 11-14 year olds.

Q: How robust are they?

A: Incredibly. They are moulded from a single piece of high-impact polypropylene with no screws or joints to fail. They are backed by a 20-year warranty.

Q: How easy are they to clean?

A: Very. The smooth surface is resistant to stains and can be wiped down easily. The dark colour reduces the visual frequency of cleaning required.

Q: Does the chair prevent rocking?

A: Yes. The rear legs are angled specifically to resist tipping back, which improves safety and focus in the classroom.

Q: Can I use them for community events?

A: Yes. The chair is rated to 204kg (32 stone) and offers a comfortable width for adults, making it perfect for PTA meetings or evening classes.

Q: Why choose Cobolt?

A: We are the education furniture experts. We offer Free UK Mainland Delivery, seamless logistics planning, and guaranteed UK-manufactured quality.

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