13" wide x 15" long. Western Long Tush Cushion: Same as the original, popular Tush Cushion®, but this one comes with an extended seat. The seat extends 5” longer and provides 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. Made with the same closed-cell foam as the popular Cashel Cushion™ saddle pads and will not collapse or give the way open-cell foam can. It will not compact or bunch up, nor hold heat.