Size M: Snout Circumference: 10.23-11.8 in26-30cm, Mouth Length: 3.54 in (9cm), Head Circumference: 10.2-20.5 in (26-52cm). Measure snout girth and length before purchasing, left a SNUG enough space for your pups Flexible &Tough Secure Dog Muzzle: Tough & Durable safe rubber material, yet the material is soft skin-friendly on your dog. Reinforced nylon strap anti-slip fixed on dogs mouth.Breathable and Lightweight Basket Muzzle: More space Allow drink, freely pant, reward training and even be fed treats with wide holes design of this dog basket muzzle, allowing for maximum ventilation to prevent your dog from overheating. Lightweight and non-peculiar smell of the muzzle.Adjustable & Comfortable: Adjust by the nylon strap of the muzzle for dogs comfortable wearing and better fitted, reinforced strong strap to secure safety. Perfect for dog outdoor and indoor exercise, training and walking.Convenient & ALL-around protection basket structure - Quick Fit Muzzle with soft padded nylon belt, easy to on and off. This unique basket muzzle provide ALL-Around protection for dogs mouth and help you get a good control for dog barking, biting, chewing.Confident Buy Muzzles: 100% Money Back Guarantee or A replacement. Please kindly MEASURE your pet friends first to choose a best suitable size. If any query for this MUZZLE, always welcome to contact us, we will provide a best satisfied service for you.