🐾 Dimensions & Capacity 🐾 Backpack Size: 9.5"L x 14"W x 15.5"H inch. Expandable Size: 23"L x 14"W x 15.5"H inch with max weight limits of 15-18 lbs for dogs and cats. It comfortably accommodates small and medium-sized cats and dogs. The cat backpack carrier expandable has three pockets for you to put items. The front pocket could put pet snack and can, 2 side pockets could put Pet water bottle, Leash and rubbish bag, 1 inside safety leash, 1 chest buckle and 1 removable mat. 🐾 Breathable & Visible 🐾 The cat backpack is designed with Multi-Entrances on the front, side and top, which easy for pet to get in and out. The large front entrance is designed to make convenient for you to interact and feed pet. It also allows you to check and communicate with your pet at any time. The cat backpack carrier is hollow out design to give pet enough ventilation and making the pet more comfortable and less anxious. 🐾 Safety & Functional 🐾 The dog backpack carrier have a two sides mat for your pet and that can be washed or removed. The pet backpack carrier has a safety leash inside that can be prevented your pet from running away. Breathable and adjustable shoulder straps relieve the stress of your shoulder. The zipper is high quality, smooth and not easily damaged. Moreover, The bottom of the cat carrier backpack has 4 non-slip design, so it won't slide easily when placed on the floor.