Our dog collars are made by hand using full grain genuine 8 to 9 oz. golden brown buffalo leather. They measure 1” wide. The leather is finished with Resolene protector leather finish and black edging dye. 1” brass roller buckle and brass D ring using double cap brass rivets. Our collars come standard with O-Ring for safety and an additional place to hook. The brass plates are laser engraved with up to 3 lines and 15 characters/spaces per line. We use the Lato font on all dog collars. Leather collars are much better for dogs compared to nylon or other synthetic materials for training and friction.