🐱【Expandable Design】Front Part 16.53 x 12.2 x 11.42 inches.Expandable Back: 16.53 x 12.2 x 23.6 inches.Expandable Pet Carrier Backpack: The cat backpack bag large panoramic window gives your pet a different visual experience. Expanded back panel to be a giant tent bed for your furry friends to enjoy outdoor time with nature and sunshine well without feeling stuffiness in the backpack. 🐱【Characteristic】Space Capsule appearnce:The unique and popular space capsule design makes your pet feel safer, comfortable and lets it have a broader vision of the outside.Breathable and Ventilation: Extra 9 holes around this pet carrier and two side windows to perform great air circulation and ventilation inside. 🐱【 Safe to use】1.Made of high-quality oxford cloth, waterproof, anti-scratch, environmentally friendly, non-toxic and non-irritating, let your pet breathe freely and relax. 2.Sturdy strap to ensure that it will not break during use.3.Smooth zipper and Safety buckle.