1. Pet Backpack Carrier: The pet backpack measures 15'' L x 12.6'' W x 16.5'' H. Perfect for dogs up to 15-pounds, or cats up to 18-pounds. Large enough for easily taking lovely pets to travel, hiking, walking or cycling, enjoy the wonderful trip with pets together 2. Pet Carrier Airline Approved: Conforms to the under-seat dimensions of most airlines,you can take your pet to any place for travel and business trips. The cat carrier bag comes with soft fleece pet mat, which good resting and relaxing for your traveling pet 3. Ventilated Mesh and Comfortable: Three-sided PVC mesh design ensures excellent air circulation and visibility, you can clearly view the status of pets inside the bag, and pets can also observe the outside. And this cat carrier backpack is firmly structured, providing ample room for your pet to move around 4. Ergonomically Designed: Breathable honeycomb sponge of the back and wide padded shoulder straps provides maximum comfort and support, while the adjustable chest and waist buckle design of the cat carrier backpacks to prevent shoulder strap deviation and maintain the stability of the pet carrier backpack 5. Foldable and : You can easily fold up your cat carrier backpacks when not in use and it will only take up very little space. This pet travel carrier can be conveniently worn over the shoulders, secured in a vehicle with a seat belt, positioned on your luggage, or carried using the top handle