This sturdy leather collar is made with thick latigo leather about 1/8 inch thick. We only offer this is the brownish color shown here with the nickle buckle. This collar is a chain martingale with a nickel buckle. By having the buckle, you eliminate the need to slip the collar over the dog's head. The collar adjusts by a few inches so an exact neck size is a must. To adjust the collar simply unscrew the posts, adjust and put the screwpost back in and tighten.