Ultra breathable - The soft dog mouth made of 3D ultra breathable mesh fabric is softer and lighter, providing maximum breathability for dogs and allowing them to breathe freely. The soft cushion strap around the nose adds extra comfort to your pet. Humanized Dog Mouth - The front of the dog's mouth is open, allowing your dog to breathe, drink water, and receive snack rewards. The muzzle of the dog is made of durable reinforced nylon stitching and non stick fur material, providing the ultimate comfort for your pet. Adjustable Strap - The dog's muzzle has an adjustable strap that you can adjust to fit perfectly to maintain stability and ensure that it will not be removed by your dog. Suitable for long snouted dogs - This safe muzzle is designed for long snouted dogs and is ergonomic. Suitable for Golden Retriever, Border Collie, German Shepherd, Labrador, Corgi, and other long snouted dogs. Size Selection - Please refer to the size chart in Figure 2 and choose the appropriate size based on the dog's mouth circumference.