PERFECT DESIGN: The design gives full coverage of the dog's mouth, avoid biting, barking and licking, or eating dirty food from the outside. Suitable for daily outings, working out, walking and other outdoor activities BREATHABLE COMFORTABLE: Fully breathable mesh with exquisite edge, prevent mesh from rubbing on eyes and nose. It is convenient for dogs to breathe freely, no overheating, easy to clean ADJUSTABLE STRAP: The adjustable nylon strap with a quick release buckle, the safety buckle is not easy to fall off and can be adjusted according to the size of the head DURABLE MATERIAL: Made of breathable mesh and durable nylon material, skin-friendly, soft and breathable, odorless, irritant free, makes dog's muzzle comfortable SUITABLE FOR SMALL TO LARGE DOGS: You have the choice between 4 sizes: XS, S, M, L. Neck size XS: 14.2-18.9 inches, it is recommended for dogs under 6-9kg. Size S neck circumference: 14.2-18.9 inches, it is recommended for dogs under 9.5-14kg. Size M neck circumference: 18.9-22 inches, it is recommended for dogs weighing less than 14.5-21.5kg. Neck circumference size L: 22-25.6 inches, it is recommended for the dog over 22kg