1、Expandable Cat Backpack: The unfolded size is 16.54*13.39*8.66 inches. It is designed with an expandable back, which provides more space for your pets. Big space gives your pet a more comfortable and relaxed environment and reduces anxiety. 2、More Breathable Design: The pet carrying bag is designed with breathable mesh windows. Your furry friends can breathe smoothly when stay in the bag. The innovative window allows them to enjoy the scenery while being safely enclosed. 3、High-Quality Construction: Crafted with premium Oxford cloth, the carrier backpack features a reinforced structure and sturdy zippers to ensure the safety of your pets. Equipped with a self-locking zipper to prevent your pet from escaping. 4、Comfortable to Wear: Comes with chest buckles to give you extra support and maintain the backpack\u0027s stability, preventing pets from slipping. The adjustable shoulder straps are equipped with extra thick padding for more comfort on the go. 5、Wide Applications: The expandable pet backpack is suitable for small dogs, small pets, and medium-sized cats. Suitable for travel, hiking, and camping, provides double safety for your pet. No more worries when you walk your dog outdoors. With the back expandable design, the space inside the backpack can be doubled. It not only increases ventilation, but also allows your pet to stay in it more comfortably and move around more freely. When lying down, the extendable cat backpack can be used as a pet house. Equipped with a firmly reinforced structure, to stop the carrier from collapsing on your pet while traveling. When you open the windows to let your pet stick his head out, the safety rope inside can stop your dog from running away. Use this expandable cat backpack, ideal for travel and outdoors use. Features: Expandable Cat Backpack: The unfolded size is 16.54*13.39*8.66 inches. It is designed with an expandable back, which provides more space for your pets. Big space gives your pet a more comfortable and relaxed environment and reduces anxiety. More Breathable Design: The pet carrying bag is designed with breathable mesh windows. Your furry friends can breathe smoothly when stay in the bag. The innovative window allows them to enjoy the scenery while being safely enclosed. High-Quality Construction: Crafted with premium Oxford cloth, the carrier backpack features a reinforced structure and sturdy zippers to ensure the safety of your pets. Equipped with a self-locking zipper to prevent your pet from escaping. Comfortable to Wear: Comes with chest buckles to give you extra support and maintain the backpack's stability, preventing pets from slipping. The adjustable shoulder straps are equipped with extra thick padding for more comfort on the go. Wide Applications: The expandable pet backpack is suitable for small dogs, small pets, and medium-sized cats. Suitable for travel, hiking, and camping, provides double safety for your pet. No more worries when you walk your dog outdoors. Specifications: Color: Blue, Green, Gray (Optional) Material: Oxford Cloth Bearing: 6kg/13.24lbs Item Size: 42 * 34 * 22cm/16.54 * 13.39 * 8.66in Item Weight: 1500g/52.91oz Package Size: 42 * 34 * 9cm/16.54 * 13.39 * 3.54in Package Weight: 1700g/59.97oz Packing List: 1*Pet Carrier Backpack 1*Pet Carrier Backpack