3/8″ wool blend top offers superior shock absorption and protection. PORON Performance Cushioning insert is lightweight, conforming and provides serious shock protection that does not diminish over the life of the pad. 5/8″ orthopedic grade felt bottom soaks up moisture, allowing heat to dissipate away from your horse’s back. It conforms to the back while maintaining density, and provides excellent shock absorption. Cut out over withers and contoured to fit your horse’s back with a split design that allows the pad to move with the horse. Butterfly cut for closer leg contact. The ESP is a convenient one-pad system perfect for any discipline.