If you work at a desk, the Putnam Sitting Wedge is a simple solution for your inevitable back problems. The Putnam Sitting Wedge adapts a horizontal seat to a deeper angle: this gently rocks the pelvis forward on the hips, taking the strain off the lower back. The Putnam Sitting Wedge is upholstered in our new exclusive grip-right velour material which prevents slipping. Sitting Wedge Features: Made by us in the UK. 2 year guarantee. Folded for comfort and comes with a carrying handle. Helps encourage better posture. Light weight to carry / travel with. Pelvic support and comfort. Eases arthritis pain. Can be used in any chair i.e wheelchair, car, sofa, office Includes removable cover in either; Black, Blue, Grey or Beige. Size (taken from maximum): L40cm x W37.5cm x D14cm (16" x 14¾" x 5½") If you are looking at this product for medical usage it is possible for us to make it with a waterproof navy fabric, which is machine washable at 95 degrees, conforms to BS7175, Crib 5 (suitable for hospitals and nursing homes).