Size XL (Head Circumference Cir: 20"-22.5"): Ideal for large, flat-faced breeds like English Bulldog and American Bully. Breed recommendations are for reference only, as sizes may vary by age. Measure your dog’s head circumference using a soft tape measure, from under the chin to just in front of the ears. A proper fit ensures security, comfort, and effectiveness. Always measure before purchasing Prevents Unwanted Behaviors: Designed with the unique face structure of flat-faced breeds in mind, the frenchie muzzle offers a safe and humane way to prevent your dog from nipping, destroying, fighting, digging, and eating everything. The BARKLESS french bulldog muzzle is a great tool for short-nosed reactive aggressive dogs, dog parks, grooming, vet visits, training, and traveling Breathable & Comfortable: Your dog can drink, pant, and accept treats with large openings that provide maximum airflow and ventilation. With wide eye holes, this dog muzzle maintains your bulldog's full field of vision, helping your pet feel secure and aware of their surroundings. Multiple air holes around the basket muzzle's head and chin parts prevent your dog from overheating and keep them cool Adjustable & Secure: The adjustable nylon neck strap is designed with a buckle that allows you to quickly adjust the fit size for your dog. Even an escape master, this frenchie muzzles for biting can't be slipped off easily. If your dog tries to take off the muzzle, calmly guide them back and reward them for keeping it on. Over time, they will learn that wearing the muzzle for dogs is a normal part of their routine Soft & Strong: Soft rubber material enhanced durability makes the english bulldog muzzle strong but soft. The short snout dog muzzle gives all-around mouth protection and does not bruise the dog's mouth or hurt the skin. Your dog will feel comfortable and won't panic BARKLESS Dog Muzzle for Short Snout, Soft Frenchie Muzzle for Biting, Chewing, Licking for French Bulldogs Boston Terriers, Ideal for Flat-Faced Aggressive Dogs Grooming Walking, Allows Drinking