Easy to adjust, put on and take off: This dog muzzle has five adjustment areas and a two-way buckle that can be fully adjusted to fit the dog's face and is easy to put on and to remove. STURDY AND COMFORTABLE: The dog muzzle is made of soft and firm silicone, durable, soft and comfortable. Round corner design, smooth without burrs, safe for dogs. Easy to clean. ACTIVITY PROTECTION COVER: The dog muzzle has a movable cover that can be opened and closed up and down, which can selectively control the dog's food and drink, and prevent the dog from indiscriminate biting and eating. HOLLOW BASKET-SHAPED VENT DESIGN: A hollow and breathable dog muzzle, can be used in all seasons, the dog can breathe freely, can prevent the dog from overheating, and will not obstruct the dog's vision Material : Silica gel; Size: XL; Recommended size: Product colour: black XL: suitable for dogs with a mouth circumference of 31-34 cm;</ Tips: Measure the length of the nose, starting about 2cm below the eyes and ending at the tip of the nose . Then measure the circumference of the muzzle at the widest point; The muzzle is made of durable yet stretchy thermoplastic (TPE) material. The muzzle can be adjusted to the dog's muzzle by heating it in hot water and cooling it in cold water to form a wide muzzle for a boxer or a narrow muzzle for a borzoi; The dog has a high probability of breaking free on the first use. You must have patience, praise and encouragement; The dog muzzle is not suitable for permanent wearing, it is recommended to loosen it within half an hour about. Snacks are rewarded.