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 dog's 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