DURABLE AND COMFORTABLE MATERIAL: Made of breathable mesh and polyester fiber, light and comfortable, ideal for outdoor travel, sightseeing, camping hiking, etc. Adjustable shoulder straps and inner drawstring: Adjustable padded shoulder straps help reduce the burden. An extra waist belt with buckle keeps the pack stable. The inner tether with clip can be attached to your pet's collar/ harness to prevent your pet from jumping out or hurting himself. make them safer. Padded Panel and Removable Bottom Cover: EPE foam padding on the back and sides to reduce the burden and provide more comfort for you and your pet, this rucksack/backpack can help your pet enjoy a good nap/ travel. Removable sturdy bottom cover makes it easier to replace/clean. Peephole and Mesh Pocket Design: The top of the backpack has a drawstring open neck hole to allow your pet to stick out their head, allowing them to be ventilated and visible for entertainment with their owners, adjustable eyelet cords and soft mesh padding holes edge for safety and comfort. Mesh side and front pockets help store belts, whistle, water, treats, treats and other essentials.