Spacious Space Design--The size of the pet backpack is 12" x 11.5" x 15" (L x W x H), creating a spacious space for your pet. Easily fits cats, dogs and most other small sized Pets!Please measure your pet before purchasing, length: neck to base of tail; height: floor to top of shoulders.Note -- Hi friends, please purchase according to the size of your pet, if you need to take the airline, please contact the airline in advance and confirm the size accepted by your flightVery Ventilated and Unique Design--This pet backpack carrier for small dogs is made of 600D frosted material. The triple mesh design provides optimal airflow and enhances breathability, protects from the sun, two-way entry for easy access, and reflective strips on the front of the pack for added safety.Comfortable and Convenient--The backpack pet carrier adds two side pockets and a front pocket. The front pocket features a shrink lock closure to hold essentials like your phone, wallet, wet wipes and more. Two elastic side pockets hold larger items like pet food, pet toys and more. The removable cushion on the bottom can be easily removed and cleaned.Ergonomic Design--Equipped with a reinforced design to prevent pets from collapsing during travel. Adjustable shoulder straps help reduce weight and increase comfort. The straps and shoulder straps are equipped with extra thick sweat-absorbing pads to reduce the pressure on the shoulders and waist, making long-distance travel more comfortable.Portable and Travel--The pet backpack carrier for cats your pet safe while flying, walking, cycling. This is the best choice for you to take your pet to the doctor or travel. When you don't need the backpack, you can fold it up.