Secure Leather Mesh Dog Basket Dog Muzzle #11 Brown - Pit Bull, AmStaff (Circumference 12", Snout Length 3.5") Made of high quality genuine leather and nickel-plated hardware, light and durable, comfortable. Great ventilation - the mesh of the muzzle gives the dog plenty of air, dog will not have hard time panting and breathing during the training. Well-fitting, safe and non-toxic, riveted for extra strength. This size is particularly suited for dogs like Pit Bull, AmStaff, or other breeds with similar snout structure. Dog snout measurements: circumference 12", length - 3.5". Please, measure your dog's snout before you place the order to insure this is the correct muzzle size you need.