More functional design: With this muzzle they can sniff everything but eat nothing, avoid eating everything they find outside. dog muzzle guard is a humane way to curb biting, barking, chewing and other bad habits while keeping your dog clothed for maximum safety, maximum comfort and maximum protectionSize please measure: 2 sizes: S, M. Size S Neck circumference: 36cm48cm, recommended for dogs 9.5-14kg; Size M Neck circumference: 46cm56cm, recommended for dogs 14.5-21kg. More humanized structure Different from the traditional dog mask, wearing the dog mouth guard, you can provide adequate space for your dog& 39;s mouth to breathe, sticking out tongue, panting and drinking, no pain in his mouth, suitable for French/English Bulldog, Pug, Boston, SharPei and other short-snouted dogs More comfortable fabric Made from breathable mesh and soft fabrics on the edges, prevents the mesh from rubbing on the eyes and nose. Durable nylon material, no overheating, soft and breathable, no smell, no irritant, make dog& 39;s muzzle comfortable Adjustable StrapAdjustable nylon strap and safety buckle, adjusted according to head size. It is not easy for dogs to remove it. Suitable for daily outings, training, walking and other outdoor activities