Mr. Peanut's tahoe series backpack pet carrier Expandable backpack for cats & small dogs, please check sizing before purchase, premium brand self locking zippers & faux fleece padding. Think of the tahoe as a larger model sport sack type carrier with an expansion port, so it is not nearly as structured when worn as the other backpacks are. Built for adventures with your best friend * please note interior sizing & pet measuring guidelines before purchase - backpack maximum exterior measures 17"Hx14.4"Wx9"d, best fit for pets up to 16"Lx14"h and up to 24lbs. Please keep in mind that we show the exterior dimensions as well as approximate interior dimensions to best portray the usable interior space for your pet.