1. M [Mouth Circumference 21.5-23cm], L [Mouth Circumference 24-26cm], XL [Mouth Circumference 26.5-28.5cm], XXL [Mouth Circumference 29.2-31cm] Please measure before purchasing to ensure the correct size. 2. Optimized Muzzle for Short-Nosed Dogs: Due to their unique nasal structure, choosing the right muzzle for your short-nosed dog can be challenging. Our short-nosed muzzle is specifically designed for short-nosed dogs, ensuring breathability and enhancing clear vision. 3. Premium Materials, Durable: This soft muzzle is made of reinforced Oxford fabric, combining strength with lightweight comfort to reduce scratching. The soft muzzle's interior is made of environmentally friendly, waterproof PVC, ensuring easy cleaning and maintenance. 4. Easy Mobility: Grooming with a dog muzzle ensures a better grooming experience. The dog muzzle also keeps your dog calm during various indoor and outdoor activities, such as nail clipping, walks, training, and veterinary visits. 5. Effective Behavior Control: When properly sized for your dog, our muzzle can serve as an auxiliary tool to prevent biting, chewing, and ripping. Proper use of a dog muzzle can lay the foundation for more positive interactions with your furry friend. If your dog's behavior becomes severe, seek help from a veterinarian or trainer. Package Contains: 1 x Dog Muzzle