The Long/Fleece model also protects sciatic area, tailbone and hips, and extends 5", providing additional padding up the cantle for riders who like to sit back in the saddle or who have had tail bone injuries that require extra cushioning. 13” w x 15” L and 3/4" Thick. The careful engineering of these seat cushions puts relief only where you need it, allowing you to ride comfortably for hours. Made from synthetic black fleece, and Cashel closed-cell foam which will not collapse, compact or bunch up - nor absorb and hold heat the way bulky, heavy gel pads do. Adjustable nylon straps hold your cushion firmly in place. These are a real pleasure to ride in, and an addition to your tack that you will never regret.