The ESP conforms to the horse's back while maintaining density, providing excellent shock absorption. Cutout over withers and contoured to fit with a split design that allows the pad to move with the horse. 3/8" wool blend top with a Xylafoam center and 5/8" orthopedic grade felt bottom soaks up moisture allowing heat to dissipate away from horse's back. Sewn on wear leathers, wither and spine. Black in color, measures 32" x 31".