Please note! Measure your dog's circumference to avoid unnecessary returns. The muzzle is an ideal solution to prevent your dog from biting or exhibiting aggressive behavior. Compact size: These masks have a compact design, are lightweight, comfortable to wear and adjustable, suitable to wear over the dog's mouth and nose. Material: These dog masks are made of high-quality nylon material, which has excellent wear resistance, durability and is not easily damaged. Practical design: Dog masks can effectively prevent biting and barking and have good breathability. Dogs can continue to breathe comfortably and smoothly when wearing masks. Multifunctional: These masks have multiple uses, suitable for daily walks, outdoor activities, travel or attending dog parties. Product features: Material: Nylon Size: S - Mouth circumference 13-30cm, neck circumference 12-26cm, weight 37.5G M - Mouth circumference 14-33cm, neck circumference 15-28cm, weight 62G L - Mouth circumference 16-36cm, neck circumference 18-30cm, weight 96G XL - Mouth circumference 20-46cm, neck circumference 23-34cm, weight 107G XXL - Mouth circumference 23-56cm, neck circumference 28-38cm, weight 116G TIPS: Place your index finger under the tape measure so that your dog has enough space and feels comfortable. Note: For small sizes, there is no logo on the dog's muzzle. Please note: 1. The color of the item may differ slightly from the pictures due to different lighting and screen settings. 2. Please allow slight variations in size due to different manual measurements.