[Please note the internal dimensions] The pet backpack meets the requirements of most airlines. It can accommodate animals up to 35 cm in length, 23 cm high and 6 kg weight. Suitable for cats, puppies and other small animals. Please pay attention to the size before payment to make your baby more comfortable. [Breathable and comfortable, suitable for pets] The pet safety belt has 3 side ventilation holes to ensure good ventilation. There is no mesh on the other side and there are 2 * 10 mm vents inside. The underside is equipped with a plush lining to keep your pet at ease throughout the trip. [Provides practical] Foldable design, can be folded below 8 cm for storage. The soft scarf and the very thick rear liner make the backpack easy to carry. Cups, keys, garbage bags can be stored in the side pockets and the central pocket is adjustable. Designed to meet the different needs of customers. [Safety deposit box with zipper and belt clip] The specially designed zipper improves stability,