1. There are five sizes available: XXS, XS, S, M, and L. It is advisable to measure your dog's muzzle circumference and neck circumference before purchasing. 2. XXS size: The muzzle circumference ranges from about 19 - 27 cm, and the recommended weight is around 2 - 5.5 kg. 3. XS size: The muzzle circumference ranges from about 26 - 34 cm, and the recommended weight is around 4 - 8.5 kg. 4. S size: The muzzle circumference ranges from about 30 - 42 cm, and the recommended weight is around 7 - 12.5 kg. 5. M size: The muzzle circumference ranges from about 38 - 52 cm, and the recommended weight is around 10 - 20 kg. 6. L size: The muzzle circumference is over about 48 cm, and the recommended weight is over around 17.5 kg. 7. The material is soft, comfortable, breathable, cool, and non - irritating. The three - hole design allows dogs to breathe relatively freely, and it is refreshing and easy to clean. 8. Design features: - The special soft - edge design helps prevent the mesh from rubbing against the dog's eyes and nose. - The adjustable nylon strap is equipped with a quick - release safety buckle, which can be adjusted according to the head circumference and is less likely to fall off. 9. This muzzle can largely cover the dog's mouth, helping to prevent the dog from biting, barking, and licking. There are small holes on it that do not significantly block the dog's line of sight. It is suitable for daily outings, training, walks, visiting friends, and outdoor activities. 10. This design is crafted for flat - faced and short - muzzled dogs, being suitable for short - muzzled breeds such as English Bulldogs, French Bulldogs, Pugs, Boston Terriers, and Shar - Peis.