35 reviews

Positiv P-Sit High Back Black Office Chair (with armrests)

Positiv P-Sit High Back Black Office Chair (with a...
35 reviews
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£465.54 £387.95

Reasons to Buy

Get good ergonomic support along the length of your back from this high-performing office chair. more info
£465.54 £387.95
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Free delivery -  lead time 2 working days
Delivery and returns -
find out more

The P-Sit High Back has been developed to create an inexpensive chair that is ergonomic, good quality and fully adjustable.

This superb ergonomic office chair boasts a 3 lever tension control mechanism, seat depth adjustment and an inflatable lumbar pump. These give the chair the flexibility to fit a wide range of body shapes perfectly and most importantly provide a degree of movement which is so important for muscle movement and blood flow.

Close up of the 3 levers of the Positiv P-Sit High Back Ergonomic Chair

Movement mode

An element of movement is great for your back. Lock it when you wish.

Positiv P-Sit High Back Ergonomic Chair, shown with or without armrests and a headrest

Practical colour

Black fabric is a popular choice for long-term homeworking.

Adjustable seat depth

The seat slide allows the depth of the chair seat to be independently adjusted.

Side view of the Positiv P-Sit High Back Ergonomic Chair

Adjustable back angle

Adjust the angle of the seat to a position which is ergonomic.

Back angle view of the Positiv P-Sit High Back Ergonomic Chair

Reasons to buy


Good value


Highly rated for comfort


Height & depth adjustable armrests


High back


Allows movement


Independent seat and back angle mechanisms

You may also like

  • Height adjustable backrest
  • Adjustable back angle
  • Height & depth adjustable arms
  • Seat slide - adds a sliding seat range of 50 mm
  • Inflatable lumbar support
  • Black base
  • Castors for carpeted floors
Seat height:
460-600 mm
Seat width:
530 mm
Seat depth:
460 mm
Seat sliding range:
50 mm
Back width:
460 mm
Back height:
560 mm
5 years on structural parts
2 years on moving parts and fabric
1 year for 24 hour use
Q: How do I adjust the back angle of my chair?

On the right hand side of your Positiv P-Sit there is a lever. Lift this to adjust your backrest angle. Once you are comfortable, release the lever to lock the back angle in place.

Q: My gas stem seems a little stiff – is this normal?

Sometimes, over time, the gas stem can become a little stiff when trying to adjust the height. A quick and easy fix for this is using WD-40 or Vaseline. Apply a light layer of grease to the gas stem, then try adjusting the gas stem 3-4 times. The gas stem should now adjust easily.

Q: Can my seat slide forward?

On the left hand side of your Positiv P-Sit you will find the seat slide adjustment. About four fingers width between the front edge of the seat and the hollow of the knee provides good blood circulation.

Q: I have lumbar support in my backrest – how do I adjust this?

On the back of your P-Sit backrest is a lumbar pump. Use the pump to inflate the lumbar support to optimal comfort.

If you need to deflate your lumbar, simply push the valve button on the pump.

Q: How do I stop the rocking motion of my chair?

There is a tilt lock on the left hand side of your Positiv P-Sit. Push the lever down to lock the tilt motion.

Q: We have hot-desking and I want to adjust the backrest height – how do I do this?

Your Positiv P-Sit backrest works using a Ratchet Back Height Adjustment. Lift the backrest to adjust the back higher. Once it reaches the top, the backrest will fall to the bottom (the lowest setting).

Q: My seat pad is worn from years of use – can I just swap a new one for the old one?

You can swap the pads over. However, you will need to contact our customer services team on +44 (0) 345 345 0010 to arrange this, as this will need to be completed by one of our install technicians.

Still having problems?

Please give our customer services team a call on +44 (0) 345 345 0010.

4.4 / 5
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