Pro Choice SMx Air Ride Western OrthoSport Pad - Anza, Designed for the strong shouldered or prominent withered horse to help them obtain maximum levels of comfort. These pads feature a ½" breathable Air Ride core, plus a second layer of padding in the dished out areas behind the shoulders and along the spine. This extra padding helps to achieve a better saddle fit and assists in the even distribution of pressure across the entire back, especially relieving pressure from the highly sensitive withers and kidney area.