Our Flat Studded dog collar is made up of genuine leather. It's a sturdy and heavy duty collar, built for tough everyday life of walks or playful fun at the dog park, and comfortable enough for Netflix and naps. Beautifully handcrafted and made of real leather with 5 holes for adjustment and 2 wide. Highly resistant to chewing, strong and durable. The studs are covered on the backside- it is finished with smooth leather against the dog's neck.