This No-Bark Muzzle stops your dog from barking. It prevents him from opening his mouth far enough to bark. This is ideal for trips to the veterinarians office, etc. It is a much less expensive alternative to the electronic no-bark collars and when your dog is barking you can put this on him and train him to stop barking. Made of brown leather. Size is Small for small dogs. Leather No-Bark Muzzle, Prevents Barking 5783$9.99 Leather No-Bark Muzzle, Prevents BarkingSame as above muzzle but size is medium for medium size dogs. Leather No-Bark Muzzle, Prevents Barking 5784$12.99 Leather No-Bark Muzzle, Prevents BarkingSame as above muzzle but size is large for large dogs. Leather No-Bark Muzzle, Prevents Barking 5785$15.99