HELP DOGS CORRECT BAD HABITS EFFECTIVELY: This dog muzzle is an effective way to limit dogs biting, barking, unwanted chewing and other bad habits. ADJUSTABLE: The adjustable strap connecting to the neck help to keep the dog muzzle securely in place, ensuring it is snug and anti-slipped. And the velcro design can be adjusted to the most appropriate size depending on the shape of dogs mouth. COMFORTABLE FABRIC: The muzzle uses breathable mesh material. It can make the dog feel more comfortable and breathable. The nylon and breathable mesh material can reduce the weight burden of your pets. ENOUGH SPACE TO BREATHE AND DRINK: The humane design solves the inconvenience of traditional dog muzzle that can't drink water. You can leave a proper space for your dogs mouth to breathe, gasp and drink when the dog wearing this dog muzzle. Size: (adjustable range) XS: 9-12 cm S: 12-15 cm M: 14-20 cm L: 18-24 cm XL: 22-28 cm XXL: 28-34 cm