Diamond Wool and ThinLine have joined together to bring you the Diamond Line Endurance Pad. 100% USA Manufacturing is rare today. Both Diamond Wool and ThinLine not only source 100% of the product in the USA, but they each also maintain sewing operations and staff here in the States. Merging the best of history with the best of new technology to create the Diamond Line Saddle Pad. Riders across all disciplines know and value Diamond Wool for its quality, natural wool saddle pads. ThinLine is regarded as the best in back protection and performance-enhancing equestrian products in the USA. These Western endurance saddle pads work for a wide range of saddles. Western, Endurance and Treeless Saddles fit well on this pad. Just double-check the measurements of your saddle to our sizes. Our Diamond Line Endurance Felt pad is 1/2″ thick and made with the highest quality wool felt. This pad features an excellent wither profile and has a contoured spine.