Quick Fit Nylon Dog Muzzle, X-Large Fits Snout Size 10.5"-11.5",&nbsp; Black Well-fitting, comfortable muzzle is made of quality Nylon. This size generally most suitable for X-Large Breeds Dog snout measurements: circumference 10.5"-11.5". Please, measure your dog's snout to insure this is the correct muzzle size you need Adjustable nylon straps