There are multiple venting holes on the backpack to ensure air circulation and the pet feels cool and comfortable. There is a breathable mesh on the left side of the backpack, It is also a small doorway where pets can enter and leave. The backpack can be hand-held or single-back. There is a non-slip support at the bottom to isolate the floor and the bottom is not easily soiled. You can take your pet out, walk, ride, shop.