The Doubled and Stitched One Buckle Slot Ear Headstall is made of 5/8" race track harness leather lined with oil-tanned lining leather. Race track harness is a very dense, fine grained leather which makes it strong but flexible. This is the best leather you can buy. The lining leather feels good against your horse's face. The headstall has a beveled stainless steel adjustment buckle. The leather beneath the buckle is handsewn together to keep the buckle from slipping. The headstall has been edged, hand-rubbed, treated with Neatsfoot Oil and hand-rubbed again.