Please measure your pet before purchase: The external dimensions of the dog cat backpack are 12.2"L x 11.4"W x 15.8"H (31*29*40cm), please make sure your pet's length (front feet to the base of the tail) is within 11.5"/29cm, and the height (from the floor to the top of the head) is within 14.5"/36cm. This backpack is perfect for dogs weighing no more than 15 pounds or cats weighing no more than 18 pounds. It provides maximum convenience and comfort for your pet when hiking, traveling, camping.Durable and Sturdy Cat Backpack: 1. Made of high-quality environmentally friendly 300D Oxford cloth, it is waterproof, wear-resistant and scratch-resistant, allowing your pet to breathe freely and relax in the backpack. 2. Adopting a sturdy steel wire frame to ensure stability and prevent collapse, providing more room for your pet to move. 3. The sturdy bottom cushion can be removed and washed separately, and the cloth cover is short plush on one side and Oxford cloth on the other.Good ventilation and visibility: 1. This cat backpack adopts a three-sided ventilation mesh setting, and the two-way entrance is convenient for entry and exit, ensuring air circulation inside the pet backpack, allowing pets to clearly observe the surrounding environment. 2. The top of the cat backpack can be opened to let your pet stick their head out, allowing them to enjoy the scenery and interact with the outside world.Safe and ergonomically designed dog backpack: 1. The built-in safety belt prevents pets from escaping from the inside when the top is opened, ensuring the safety of pets. 2. The widened mesh shoulder straps are adjustable, and the padded back provides you with support and comfort. This cat backpack also comes with a chest buckle to help reduce the burden, prevent the shoulder straps from slipping, and maintain the stability of the pet backpack.Convenient storage: 1. There are two storage pockets on the side of the pet carrying bag, one for garbage bags, dispensers and water bottle holders, and the other for mobile phones, wallets and other small necessities. 2. This dog and cat backpack can be folded flat when not in use.