Somebody said that the dog mouth cover is easy to fall off, maybe it's because your dog just started to wear the dog mouth cover, he she is not used to it, and has been rubbing it off. At this time, you need to be more patient. If the muzzle fall off, wear it back for him her. Don't wear for a long time at the beginning. He will get used to the cover after several times. In addition, the buckle on the strap can be put through the dog's collar, so that it is not easy to fall off. Product structural parts Adjustable side straps and fixed sockets.--Fits the dog's head type and can be adjusted in size, so the dog is not afraid of being fat. No deformation or cracking, strong and firm, no need to worry about unfastening. Fixed buckle.--Ordinary dog muzzles are worn directly and are very easy to drop. This dog muzzle is specially added with a fixed buckle, pass the collar through the fixed buckle, you won't worry about falling. Bring no affect on drinking water.The dog muzzle is opened slightly to solve the problem that the dog cannot drink water. Product Information Size: S: Suitable for dogs with a mouth circumference: 4.7-6 inches 12-15 cm, weight: 3.3-9.9 pounds M: Suitable for dogs with a mouth circumference: 5.5-7.8 inches 14-20 cm, weight: 11-18.7 pounds L: Suitable for dogs with a mouth circumference: 7-9.4 inches 18-24 cm, weight: 9.8-27.5 pounds XL: Suitable for dogs with a mouth circumference: 8.6-11 inches 22-28 cm, weight: 28.6-77.1 pounds XXL: Suitable for dogs with a mouth circumference: 11-13.4 inches 28-34 cm, weight: 78.2-110.2 pounds5.NOTE: Most dogs don't adjust to wear muzzle at the beginning, so please take time to let them adapt dog muzzle patiently. And don't let dogs wear the muzzle in for a long time. If your dog's circumference is between two sizes, the smaller size would be more suitable. 4.Dog Muzzles to Prevent Barking: Necessities for dog owners. This soft dog walking muzzle prevents disorderly eating food and harmful self-licking. Perfect for handling and grooming, protection of wounds and supervised freedom for assertive dogs. 3.Sweet Design: With a buckle, the dog muzzle can be fastened to the collar and will not fall off easy. 2.Lightweight Muzzle For Dogs: Comfortable materials give dogs all-round protection. With high-quality nylon webbing, adjustable loops, dog muzzle gives you a high-quality experience, let you no longer worry about dog. 1.Bounce for Short-Snouted Dogs: The width of this dog muzzle is small, suitable for small dogs, short-snouted dogs. No longer to worry about loved dogs cannot buy a suitable dog muzzle.