3/8-inch wool blend top offers superior shock absorption. XPF center with a self adjusting profile that provides the highest level of protection. 5/8-inch orthopedic grade felt bottom soaks up moisture, allowing heat to dissipate away from your horses back. Conforms to the horses back while maintaining density and provides excellent shock absorption. Cut out over withers and contoured to fi t your horses back with a split design that allows the pad to move with the horse. One-pad system perfect for all disciplines. CESPF1828