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Spynamics SD4 /SD5 Specialised Lumbar Support Chair & Bespoke Seat Size

Spynamics SD4  Medium Back, Large Seat, Specialised Orthopaedic Chair.


Regular price £1,159.20 £966.00EX VAT


The Spynamics SD4 is a specialist orthopaedic chair for chronic back pain sufferers with all the extras you could wish for. It has been specifically designed so that each of the key areas of the spine receive optimum support, providing ergonomic comfort that far exceeds other orthopaedic chairs.

The unique feature of the Spynamics SD4 is that is gives you a triangulation of support - an integral pelvic support module and 2 way adjustable lumbar pump.

At a glance ......

  • Highly adjustable orthopaedic seat for chronic back pain sufferers
  • Bespoke seat size available
  • Medium Back (500mm)
  • Large Seat (530W x 550D)
  • 2 way adjustable lumbar
  • Sliding seat for adjustable seat depth
  • Memory foam seat and back
  • 5 way adjustable arms
  • Backrest tilt and height adjustable
  • Coccyx relief cut-out available
  • Integral pelvic support 
  • Sacral Pump
  • Thoracic pump
  • Headrest available
  • Delivery time 10-15 days

Need help finding the best chair for you? Download and complete this form and send it to where we will help you find your perfect size and style, or would you prefer a specialist to come and visit you at your workplace to advise on the best model for you? Please contact us.

We have offered the chair in 8 colour options, however there are many more fabrics colours available, these can be viewed at

Would you like to see a fabric sample? Please email


Some Extra Info....

Since its introduction in 1999, Spynamics has evolved from a single chair into a range of 14 preconfigured ergonomic and orthopedic chairs, but still allows you to build a bespoke, made to measure version to suit whatever personal back condition your customer may have. The Spynamics family caters for sizes ranging from 4’10” to 6’5” and up to 23.5 stones (150kg). For users larger than this we have the Grande range.

The first Spynamics chair was designed in a modular fashion ensuring that each of the key areas of the spine (the pelvic, the lumbar and the thoracic) received optimal support. Created together with the expertise of osteopath Stephen Green, we have used state-of-the-art material technologies combined with the latest in adjustable seating controls to bring the concept of spinal dynamics into the workplace. One of the unique features of Spynamics is the triangulation of support provided by the pelvic module cushion and the three way adjustable lumbar. We use a pump lumbar on our unique height and depth adjustable lumbar cradle. At the area around your shoulders (the thoracic area) we position a thoracic pump. We have now added the sacral pump for the lowest part of your spine. These combine to provide back comfort and adjustability that surpasses all other orthopedic chairs. The Spynamics range of chairs promote correct seating posture thereby aiding those with existing back complaints as well as helping others to avoid potential problems.

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What Customers Are Saying

The team at Emotion Office were extremely helpful and knowledgeable. The post sales service was excellent too. I’d highly recommend them. Thanks Kath and team.

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Emotion Office have been great! Nothing too much trouble and very attentive from order to installation - even on a small project like ours. I highly recommend them.

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