About this project [Mesh Expandable Cat Backpack Design]: The pet expandable backpack measures 13.3 x 10.2 x 16.5 inches (L x W x H), this expandable mesh cat backpack is suitable for most small and medium cats, dogs, Small pets up to 16 lbs. The Pet Expandable Backpack is designed for versatility. A great expandable pet backpack carrier for puppies, cats outdoors and the comfort of a pet house at home. Expandable cat-back backpack with warm fleece bedding, sturdy reinforcement construction, large breathable mesh windows. This mesh expandable cat backpack is a super comfortable pet house for pet friends to rest at home, sleep, and travel. Waterproof material protects pet friends from light rain. [Safety Design Cat Frame Backpack]: Expandable dog backpack harness for small dog airlines, approved with multiple safety accessories. The escape zipper prevents a kitten or puppy from accidentally opening the zipper. The safety leash is attached to the pet collar or harness. The steel frame keeps the shape of the expandable pet backpack sturdy and durable. Anti-scratch mesh prevents bites/scratch. Reflective tape for safety at night. This cat backpack has an expandable design for safety. [Perfect Cat Travel Backpack]: With thick and soft foam on the shoulder straps, handle straps and lower back, this cat trekking backpack is perfect for easy travel with your cat and dog. There are shoulder strap buckles for better balance when walking on the expandable pet backpack. The oversized mesh windows of our expandable backpack for cats allow for better airflow. A large mesh pocket holds pet treats/bowls etc. This cat expandable backpack strap is perfect for short/long trips.