Expandable Design - The external size of the backpack is 15.4 inches x 9.3 inches x 12.5 inches, and the expandable part is 11.6 inches x 9 inches x 9 inches, providing more rest space for pets, and ensuring that your cat can turn comfortably..Comfort and support - For backpackers, the ergonomic design and adjustable padded shoulder straps evenly distribute weight, making it comfortable to carry even on long trips..Hands&Foldable - Cat backpack allows you to move effortlessly and is more convenient to carry when going out. Compared to hard cat carrier, the cat backpack can be folded and stored, saving space..Storage and Safety - 4 storage pockets of the cat bag, which can be used to store bin bag, cat snacks. Built in retractable hook rope to prevent pets from escaping.. Material - This cat carrier is made of 300D Oxford cloth, waterproof and scratch resistant, allowing pets to breathe ly and relax..Ventilation and visibility - Good ventilation is crucial for the comfort of cats during travels. Mesh fabric not only allows your cat to see, but also allows light to enter, making the cat backpack feel less airtight. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.