High Quality Material: The dog backpack is made of oxford fabric, which is wear-resistant and scratch-resistant. The waterproof material makes it easy to clean. The high quality fabric is durable and washable and will not cause any irritation or side effects to your dog. The sleek design is perfect for taking your pet on daily outings and trips. Size: The pet backpack comes in two sizes: three sizes to choose from. M: 23*12*49cm, suitable for pets whose back length is 43-50cm, neck circumference is 38-42cm, and weight is 12-18kg. L: 27*14*55cm, suitable for pets whose back length is 40-44cm, neck circumference is 40-44cm, and weight is 18-28kg or less. Perfectly functional: our backpack allows your dog's front legs to extend over your shoulders and the head to stick out of the pocket, the dog will be comfortable and at the same time increase communication with you and be more safe. The breathable mesh design on the side ensures air circulation in the backpack, which makes the trip more comfortable for your pet. Comfort: The shoulder straps are adjustable and ergonomically designed to adapt perfectly to the morphology of the animal. The increased width of the hip belt is designed to distribute the weight across the waist for a more stable and comfortable carry. The side pockets of the pet backpack store essential travel supplies, freeing up your hands.