Contoured two-tone orthopedic grade wool saddle pads with XRD build-up is specifically designed to relieve shoulder strain and pressure. The Correct Fit Saddle Pads helps with hard to fit conformation, high withers, narrow shoulders, asymmetrical muscle development and poor saddle fit. The XRD is encased behind the scapula. The XRD provides a protective shield that absorbs up to 90% of force â€“ protecting from pressure and relieving strain and soreness. The uniquely designed build-up evenly aligns horse, pad and saddle for a Correct Fit â€“ every time!