PERFECT DESIGN: The design gives dog full mouth coverage, avoid biting, barking and licking, or eating dirty food from 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 your head size DURABLE MATERIAL: Made of breathable mesh and durable nylon, skin-friendly, soft and breathable, odorless, irritant-free, makes dogs muzzle comfortable SUITABLE FOR SMALL-MEDIUM-LARGE DOGS : There are 4 sizes to choose from: XS, S, M, L. XS size neck circumference: 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. Size L neck circumference: 22-25.6 inches, it is recommended for the dog over 22kg