Mx H.D. (Heavy-Duty) Air Ride Saddle Pads have a 3/4" breathable core and hand woven 100% wool Navajo blanket top. Heavy-Duty SMx Air Ride core protects the horse's back from pressure. 100% merino wool lining helps wick away moisture and conforms to the horse for maximum comfort. These pads are appropriate for any western discipline. Heavy-Duty Air Ride absorbs shock that could affect the performance of the horse. SMx Air Ride Saddle Pads are available in a variety of special sizes, shapes and color combinations. We make a saddle pad to compliment any saddle, fit any horse, and suit any discipline.