Donut Shaped GEL kneeler with a snap on cover. Features: Extended Feet, Non-Marring, Extended Heat, Contoured Strap, Feed & Pull fasteners. Kneelers reduce pressure directly on the patella bone and creates a 2 in 1 kneepad for delicate or rough surfaces. Absorbs pressure around the perimeter of the knee. Kneelers will not scuff or mark delicate surfaces. They support the shin and help distribute body weight while eliminating binding behind the knee.