abcGoodefg&reg; Adjustable Quick Fit Nylon Mesh Muzzle, Training Mask Muzzel - Stop Biting, Stop Barking and Chewing. (Black, Small) Made of mesh nylon with velcro tape closure for easy adjustment. Prevents your dog from biting, barking and chewing things, great to prevent your pampered ones from chewing furnitures. Quick Clip Adjustable Strap, Quality Nylon Mesh. Measure around snout near nostrils, under chin, over nose. Please measure your dog mouth circumference before buy it.