Dogs My Love Metal Wire Basket Dog Muzzle Rottweiler Large Male. Circumference 16.5", Length 4.5" Light, durable, comfortable, and safe. Very well ventilated Ideal solution for grooming, off-leash walks Allow for panting and drinking, dog will not have hard time breathing during the training. This size is particularly suited for dogs like Largst Rottweiler males or other breeds with similar snout structure and size. Circumference 16.5", length 4.5" (from the tip of the nose to the eyeline). Please, measure your dog's snout before you place the order to insure this is the correct muzzle size you need.