Adjustable Pet Leather Muzzle No-Bite Dog Mouth Mask Made of PU leather, feeling soft hard moderate, your pet will feel comfortable to wear it. Can prevent your pet from bitting things casually. Muzzle Deep: 5-8cm/1.96-3.14inch Collar Length: 35cm/13.77inch The largest of the circumference: 25-28cm/9.84-11.02inch