Adjustable buckle design allows the dog muzzle to be adjusted to the most suitable size based on the dog's mouth shape. This dog muzzle helps prevent biting, barking, chewing, and other unwanted behaviors. Made from good-quality polyester material, it is bite-resistant, safe, and durable. Available in four sizes: S, M, L, and XL. Suitable for dogs, including those with flat faces. Item Name: Dog Muzzle Material: Polyester Color: Green Features: Adjustable, Anti-bark, Easy to Wear Size Details: [Size S] Telescopic Range: 19cm-28cm / 7.5"-11" (Approx.) [Size M] Telescopic Range: 27cm-36cm / 10.6"-14.2" (Approx.) [Size L] Telescopic Range: 35cm-44cm / 13.8"-17.3" (Approx.) [Size XL] Telescopic Range: 43cm-52cm / 16.9"-20.5" (Approx.) Package Includes: 1 x Dog Muzzle