Product description Material: PU leather Color: black, brown S: 14-18cm front mouth circumference, 18-22cm back mouth circumference, 21-33cm back head, suitable for weight 8-25 kg M: The front circumference of the mouth is 19-22cm, the back circumference of the mouth is 23-27cm, the back of the head is 24-36cm, and the weight is 20-50 kg. L: The front circumference of the mouth is 23-26cm, the back circumference of the mouth is 29-33cm, the back of the head is 31-40cm, and the suitable weight is 45-75 kg. Package content: 1*leather anti-bite and anti-dog mouth cover 1.Material made from High quality leather, durable and robust, skin-friendly, for dogs. Mesh design, good ventilation.The metal rivet keeps the muzzle in place for a secure comfort for your pet. 2.Breathable Air Holes Design, it is breathable when putting on. It also allows Dog to eat enough to open to her mouth, and prevent still chew. 3.Adjustable it's not just suitable on side strap as well as lower adjustable strap under the mouth. It has a quick release buckle, leather strap on the back easily snaps onto the lead. 4.Useful Help to make Dog from bites to stop -- around the barking and dog's mouth. Protect your children when they also with dogs stay, you can protect your dog from the food at a later date at the street. 5.REUSABLE These anti bite muzzles are designed with a fully adjustable strap and buckle. This design will help you easy to put on or quick release buckle, it's very convenient and simple to adjust the right size for your dog. Besides, the material is wear-resistant, dirt-proof and easy to be cleaned, so that it can be used again and again.