The Birdwell Enterprises – Plastic Dog Muzzle with Adjustable Plastic Coated Nylon Headstall is a medium sized muzzle that is perfect for most dogs 40-60 pounds. This muzzle features a heavy-duty plastic-coated nylon strap that will not break under hard use. The buckle is made of stainless steel and the basket muzzle can be heated and molded to get the best fit for your dog. This muzzle is also durable and comfortable for your pet.