Dog Muzzle ,Pashion Pet Dog Mouth Cover ,Dog Mouth Nylon Muzzle for Barking Biting Chewing ,Adjustable Mesh Muzzle for Small Medium Large Big Dogs Pitbulls ,Stop Bite Mask (Pink, S) Pashion Dog Muzzle features with comfortable and breathable mesh nylon material. Its adjustable at the snout with velcro and strap with buckle. Size Recommended Guide: S: Width: 4.7 -5.5 inches (12-14 cm); Length: 2.2 inches/ 5.5 cm; M: Width: 5.5 -6.3 inches (14-16 cm); Length: 2.2 inches/ 5.5 cm; L: Width: 8-9.5 inches (20-24 cm); Length: 2.4 inches/ 6 cm ; XL: Width: 9.5-11 inches (24-28 cm); Length: 3.1 inches/ 8 cm; XXL: Width: 11 -12.6 inches (28-32 cm); Length: 3.1 inches/ 8 cm. We recommend you measure your dog to ensure the right fit. Length MEASUREMENT, Pls measure the distance from the trip of the nose to the base of the nose just below the eyes. Width MEASUREMENT, Pls measure around the circumference of the widest part of the muzzle,usually just below the eyes. Pls note:Your dog snout length should be 2.2 inches/ 5.5cm at least. The dog muzzle will prevent your dog from biting barking or chewing things, this is a great product to prevent your dog to chew the furniture of your house. Loose enough for him ( or her ) to be comfortable. Dimensions are measured strictly,any feedback warmly welcomed,our after-sale service is for you to be completely satisfied.