【Durable Material】: Made of strong PVC and Oxford Canvas material, this backpack is durable, lightweight, soft, and waterproof, scratch and tear resistant. The air mesh allows your pet to breathe freely and relax.【Spacious Design】The size of the pet backpack is 37x25x34 cm (Width X Width X Height), creating a spacious space for your pet. It is easy to care for cats, dogs, and most other small and medium-sized pets.【Unique Window Design】: In addition to all the features of traditional pet carriers, this unique window design provides a good view for pets. At the same time, with ventilation holes on the front and sides, more breathable, more comfortable, and safer on the outside. Relieves pets' fears.【Comfortable to Carry】: Expandable pet backpack with adjustable shoulder strap and thick toy. The thick handle makes it easy to carry. It can be used as a front backpack or a one-hand carry bag.