Abetta PR0 Memory Foam Orthopedic pads feature shock-absorbing, Memory Foam laminated to a durable, absorbent Saddle Felt top and bottom. Memory Foam is double thick under the saddle bars where the pounding takes place. This unique Memory Foam, used in Orthopedic mattresses, fills in the space between the saddle and the horse's spine ensuring a perfect match between the horse and the saddle while providing extra support where needed. Large back vents reduce heat build up while the feathered edges are thinner for closer contact. Rigging cut-outs help prevent slipping and reduce bulk under fenders.