The quick release version of the S3 adds hardware that lets the backrest come off the chair without tools, while keeping the soft cube cut foam that makes this back support comfortable to sit against for hours. If the chair goes into a car boot, or a carer needs to reduce it for storage, this is the hardware to specify.
Cube cut foam works by giving way in small sections, so the back finds its own resting shape. It suits a client with minimal positioning needs who spends a long time seated and whose main complaint is discomfort.
Where an asymmetry does need addressing, the BAC system can be built into the back support, so you are not choosing between comfort and correction.
