Chiro Medium Back Posture Chair
Black fabric, Blue fabricCode OP000247
Also in other colours
How it works
Hover over a card, or tap it, to see how it works. What do these mean? See every feature explained
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Seat Height
Lift the lever under the seat. Take your weight off to go up, sit down to go down. Let go to fix it.
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Back Height
Lift the backrest — it clicks up a notch at a time. Go past the top and it drops back to the bottom.
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Inflatable Lumbar
Squeeze the pump to inflate the cushion in the backrest for firmer support. Press the release valve to let air out.
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Independent Back Tilt
Lift the lever and push the backrest to the angle you want, the seat stays put. Push down to lock the back.
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Independent Seat Tilt
Lift the lever to tilt the seat back, push down to lock in position.
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Forward Seat Tilt
Lift the lever and tip the seat forward, then push the lever down to lock it. Tilting forward helps you sit upright.
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Height Adjustable Arms
Press the button under the armrest and move it up or down.
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Folding Arms
Lift the arm up and back out of the way, slide right up to the desk or tuck the chair under.
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Heavy Duty
Built and tested for people up to 150 kg (about 23½ stone), extra-strong frame, base and gas lift.
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24 Hour Use
Built for round-the-clock use shift work, control rooms and call centres.
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2 Year Warranty
2 years of cover on every part, if a component fails through a manufacturing fault, we’ll sort it.
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BS 5459
Tested to BS 5459 — the tougher British standard for heavy-duty office chairs: users up to 150 kg (about 23½ stone) and use up to 24 hours a day.
A medium back posture chair with a ratchet height adjustable backrest, pump-up lumbar support, a contoured foam seat and back, a three-lever mechanism so the seat and back angle set separately, and a seat slide. Built for all-day use and users up to 150kg. This is the stocked version in Black fabric or Blue fabric. Want a colour? See the bespoke version of this chair, upholstered in your choice of 20 fabrics.
Key features
- Posture chair – approved by a UK Chiropractic Doctor
- Height adjustable ratchet backrest with pump up lumbar support
- Contoured foam seat and back for extra comfort
- Triple lever independent mechanism
- Independent seat and backrest tilt angle adjustment
- Seat slide
- Polished chrome 5 star base
- Tested to BS 5459-2
Specification
| Overall width | 650mm |
|---|---|
| Overall depth | 590mm |
| Overall height | 900mm |
| Seat width | 480mm |
| Seat depth | 460 to 510mm |
| Seat height | 480 to 580mm |
| Back width | 460mm |
| Back height | 450 to 500mm |
| Maximum user weight | 150kg |
| Recommended use | Up to 24 hours a day |
| Materials | Fabric & Chrome Metal |
Delivery and assembly
- Free delivery on this chair.
- Flat-packed (simple self assembly): delivered within 1-2 working days. Contact us if you have a preferred date.
- Fully assembled: choose Fully assembled above (+£25 ex VAT), delivered ready to use within 10 working days.
- Fully assembled Fast Track: choose Fully assembled Fast Track above (+£50 ex VAT), delivered pre-built within 1-2 working days.
Returns
Chairs can be returned within 14 days, unused and in their original packaging. A return fee of £30 + VAT is taken off your refund.
Warranty
2 year guarantee on the mechanism and 1 year on the fabric and foam.
See it in action
Chiropractor Approved.
Product features
Gas Height Adjustment
Easily customise your seating position with the gas height adjustment, ensuring ergonomic comfort for every user.
Tilt Adjustment
Easily find your perfect recline position with the tilt adjustment feature, allowing for a comfortable and supportive seating experience throughout the day.
Seat Slide
Adjust the seat depth with the seat slide feature to accommodate your leg length and ensure proper support.
Ratchet Back Height Adjustment
Achieve the perfect back support with the ratchet height adjustment, designed to fit your unique posture needs.
Backrest Tilt Adjustment
Easily adjust the backrest angle to find your perfect recline position, ensuring optimal support and comfort.
Optional Height Adjustable Armrests
Easily adjust the armrest height to reduce strain on your shoulders and arms, promoting a more ergonomic working posture. This chair is also available with folding height adjustable armrests for added flexibility or without armrests entirely
Adjustable Pump Lumbar Support
Fine-tune your lower back support with the integrated pump lumbar system, allowing you to increase or decrease firmness for personalised comfort and improved posture throughout the day.























































































































































































































































































































































