Product description Material: nylon Color: red, black, gray Muzzle size card: M - muzzle circumference: 14-12 cm L-muzzle circumference: 18-24 cm XL muzzle circumference: 22-28 cm Package content: 1 * pet anti-bite dog muzzle 1. Adjustable and Secure: The dog muzzle is adjustable and the nylon neck strap is easy to wear and install. A plastic buckle on the neck strap to prevent the muzzle from falling off. 2. Comfortable and Breathable: The muzzle uses breathable mesh material to make the dogs feel more comfortable and breathable, and the material over the nose is softer than other muzzles, nylon and breathable mesh material can reduce the weight burden of pets. 3. SECURE: Ergonomically designed safety straps ensure the muzzle stays securely in place and provides an easy to assemble and secure buckle. 4. Multipe SizesThe dog muzzle comes in 3 sizesM, L, XL Can be adjustable to be used for all dogs including tiny and fine breeds. If your dog's circumference is between two sizes, a smaller size larger would be appropriate. 5. Caution: Most dogs do not adjust to wearing the muzzle at the beginning, so we must take our time to let them adjust the muzzle patiently.