Description: Material: Nylon Size: Neck circumference S: 12-26cm/4.72-10.24inch M: 15-28cm/5.91-11.02inch L: 18-30cm/7.09-11.81inch XL: 23-34cm/9.06-13.39inch XXL: 28-38cm/11.02-14.96inch Color: Black Feature: 1. Effectively prevent dogs from barking and biting, suitable for training and controlling pet behavior 2. Breathable and lightweight material, comfortable to wear, does not affect breathing and movement 3. Adjustable design, suitable for different sizes of dogs, fits facial contours 4. Safety protective mask, suitable for veterinary visits, beauty care or travel 5. Easy-to-clean material to ensure long-term hygiene and effectiveness Note: 1. Manual measurement may have an error of 1-2cm. Please understand, thank you. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. Package includes: 1*Anti-bite and anti-barking dog muzzle