ADJUSTABLE SIZE: The adjustable strap connecting to the neck help to keep the dog muzzle securely in place, ensuring it is snug and anti-slipped. Adjustable at snout and neck strap. Keep the muzzle tight enough to control his bite. COMFORTABLE AND BREATHABLE: The dog muzzle practical and reliable is made with high-quality nylon material, soft breathable mesh and soft fabric. The interior of the muzzle has extra soft padding providing the ultimate comfort for your pet. UPGRADE HUMANIZED DESIGN: The humane design solves the inconvenience of traditional dog muzzle that can't drink water, can leave a proper space for your dog mouth to breathe, gasp and drink. While preventing biting and muzzle for dogs used for safe socialization. EASY TO WEAR AND CLEAN: The ergonomic design of the dog muzzle ensures that the mask stays securely in place. Can easily be secured with a hook and loop fastener to prevent loose ends. Most dogs don't adapt to wear muzzle at the begining, so we have to take time to make them adapt muzzle patiently. It could be washed by the washing machine, and dry flat. Size: M: Front Mouth Circumference - 15.24-27.94 cm M: Neck Strap - 12.7-33.02 cm L: Front Mouth Circumference - 17.08-29.97 cm L: Neck Strap - 16.88-35.56 cm