ObusForme Medium Size Ultra Forme Backrest Support in good condition. MEDIUM SIZE - for heights 5'3" to 6'2" (160 cm to 188 cm).
The only backrest scientifically proven to relieve back pain. The patent-pending design shifts the spine into a positive neutral curve, taking pressure off the lumbar discs. Portable and lightweight, turns any chair into an ergonomic seating system. Reduces sedentary muscle contraction, alleviating back strain.