Top Paw Multi-Functional Backpack For small dog / cat This is also a Pet Carrier backpack as well. The top opens up, the sides of the bag are vented and the middle zips out and opens the bag from the front. It has cup holders on each side, there are waist clips and the shoulder straps can clip off as well for easy off/on. All zippers are in tact with no rips, tears or anything worn out.