The Domke FA-031 U.S.P.O. Shoulder Pad is an ergonomically designed pad that is made of thick foam rubber on a tough leather backing. This pad is identical to the shoulder pad used by letter carriers with the addition of touch fastener tabs which adjusts to fit straps up to 2.75" / 7cm wide. The newly engineered foam makes pad more durable and attractive than ever. Super comfortable when using a shoulder strap and heavy bag.