Classic SensorFlex Wool Top Pad, 34" x 38" The Classic SensorFlex Wool Top Pad has a 100% wool top that provides great looks and durability. 7/8" heavy wool felt center absorbs shock and molds to the horse's back for a solid, secure fit. 100% merino wool fleece bottom. The felt and fleece is designed with cutouts under the saddle fenders to provide a greater feel and communication with the horse. The pad is 1" in total thickness.