The K9 Sport Sack K9 Sport Sleeper Blow-Up Air Mattress is the most advanced inflatable dog bed of its kind. This blow-up air mattress was created to eliminate the need of carrying a bulky dog bed without abandoning functionality. The Sport Sleeper has Klymit technology offering durability, comfort and ease of use. Unlike traditional inflatable sleeping beds that flatten, the Sport Sleeper mattress' deep welds create expansion zones that allow your bed to fully loft beneath your pet. In other words, your dog won't be sleeping on the ground!