VENTILATED BACKPACK: With a breathable bubble window in the front, this clear pet backpack allows cats to enjoy the sun without feeling stuffy, there are exits on the side for pets to enter and exit, and you can also pet your kitten, which is the best ventilation in a space pack ever. MORE SPACE AND FOLDABLE: Compared with others, our square design leaves enough space for cat (under 15 pounds)to turn around, besides, we design the backpack can be folded to very small package, and there are side pockets and hook holes, you will enjoy the greatest convenience when taking your cat out. SAFETY & ANTI-SCRATCH: Made of 600d oxford cloth and nylon mesh, environmentally friendly and breathable. Not easily scratched by cat claws. There are protective films on the front and back of the shell, which is scratch-resistan, please watch our video to remove the membrane cleanly. NO PRESSURE TO CARRY: The shoulder strap is equipped with a chest buckle to prevent the shoulder strap from falling, and the back is sewn with pearl cotton and breathable mesh, giving you a comfortable and breathable experience. ANTI-ESCAPE AND DOUBLE SIDED CUSHION: Built-in harnesses keep your naughty friends from escaping, and the short plush cushion is double-sided for summer and winter. Can be disassembled and washed separately! [FRIENDLY REMINDER]: Classic and upgraded versions will be sent at random. If you need to replace them, please feel free to contact us at any time. Thank you again for your support and love.