Adapt 500 Chair from Posturite
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Adapt 500 Chair

  • If you purchase this chair online today we will send out one of our nationwide chair experts to set you up correctly FREE of charge.
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  • This product will take 10-15 days for delivery . Please check the delivery and returns tab below for more info.
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Price as configured: Ex VAT £0.00 Inc VAT £0.00

The entry-level Adapt 500 ergonomic office chair comes in six varieties (all different combinations of backrest and seat sizes). Once you’ve selected your model, you can go ahead and customise it to suit your unique shape, preferences and needs. People aren’t made to standard specifications. Ergonomics is all about designing products that fit their user and task as best as possible.

A poorly built chair — or one that’s been poorly matched to the user, can cause and worsen aches and pains across the body through lack of support, or support in the wrong places. The Adapt 500 offers a high level of customisation so you can create a chair designed especially for you.

Key features:

  • High quality ergonomics
  • Find a size perfect for you
  • Huge range of customisation options available

The Adapt 500 comes with a memory foam seat, inflatable lumbar support and free-float mechanism (to promote healthy movement while seated) as standard.

Need help customising your chair? Simply call our friendly customer service team on +44 (0) 345 345 0010, or email to be put in touch with an expert.

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Price as configured: Ex VAT £0.00 Inc VAT £0.00

Additional Information

The Adapt 500 can be customised. Add special features to build your perfect ergonomic office chair. With so many options, choosing can be overwhelming. Download the Adapt Chairs Adaptation Details Brochure for a run-down of every option available.

Model choices

It’s simple. The first number 5 represents the Adapt 500. The second number represents the height of the backrest (small to large, or 1-3), and the third represents the size of the seat (small to medium, or 1-2). See specs for measurements.

  • 511 - small backrest, small seat
  • 512 - small backrest, medium seat
  • 521 - medium backrest, small seat
  • 522 - medium backrest, medium seat
  • 531 - large backrest, small seat
  • 532 - large backrest, small seat

Headrests add an additional level of comfort and support to your Adapt 500 — ideal when you want to lean back in your chair for a break. The Adapt range of headrests offers different models to suit all users.


Add additional comfort to your Adapt 200 with armrests. While it is not compulsory to have armrests, it can enhance your experience. It depends on the tasks you plan to carry out (precision tasks can benefit from armrests), and your own preferences (some people prefer the stability when entering or exiting a chair). Adapt armrests come in a range of types, which you can find explained in the brochure.

Arm pads

Add extra padding to your armrests and elevate your office chair to new levels of luxury.

Vertical support

Add a vertical air cell either on the left or right side of the chair (or both) to offer greater lateral support if needed.

Memory foam backrest

The Adapt 500 comes with a memory foam seat as standard but we also offer the option of a memory foam back. The foam reduces surface tension for comfortable support.

Upholstered back

For a luxurious look you can opt to have the back upholstered to conceal the black plastic.

Sacral support cell

Inflatable support across the ‘sacrum’ (base of the spine), especially beneficial for those with sciatic and pelvic support issues.

Seat size

If you require a specialist seat size not offered in our six ‘template’ models, you can choose from XL, or XXL.

Coccyx cut-out seat

Opt for a cut-out in the seat to relieve pressure around the coccyx area.

Thigh support

Add inflatable air cells to take pressure off the the middle of the seat. This is especially beneficial for people with muscle-wastage conditions.

Reduced seat width

You can choose a specialist seat width from 410mm.

Memory foam seat (additional layer)

Add another 20mm of memory foam to your seat for a supreme level of comfort.

ErgoCore seat system

A dual-chamber air-cell system inserted into the seat to encourage your core and lower back muscles to work, while cushioning your bones. Ideal for sciatic relief.

Gas stem

The gas stem determines the height of the chair. The option you choose depends on your height and the height of the surface you work at.


Choose from the standard black nylon base, or the optional stylish polished aluminium base.


The castors affect how your chair moves. As standard we offer 65 mm casters for the best ‘roll’ on carpeted floors. For bare floors brake-loaded casters may be a more suitable option.


Add a footring if you need somewhere to rest your feet as you sit.

Seat width (mm)

  • Small - 480
  • Medium - 510mm

Seat depth (mm) range

  • Small - 440-500
  • Medium - 470-530

Back width (mm)

  • Small - 420
  • Medium - 460
  • Large - 465

Back height (mm) range

  • Small - 420-500
  • Medium - 520-600
  • Large - 560-640
  • User weight

    Minimum: Must be at least 7.4 stone (45k) to control the seat tilt mechanism.


    5 years for normal use

Non-warehouse stock

We do not keep stock in our warehouse. We will order this item from our supplier.

Delivery time

We will process your order in 24 hours. Please allow up to 4 weeks for delivery, though times will often be faster than this. If the goods are being delivered to a private address, the end user will be contacted prior to despatch of the goods to arrange a delivery date.

This item is non-returnable

Due to the bespoke nature of this product, that it's specifically made for you, this item is non-returnable.

Please ensure you consider your purchase carefully before ordering. If in the very unlikely event the item is faulty we will collect it and either refund it or provide you with a replacement.

Please let us know within 24 hours of receipt of the item to make a valid claim.

Free chair setup service

Upon receiving your chair, please email or call +44 (0) 345 345 0010 to arrange your complimentary chair setup.