The Upper Stair Bump Aid is a device to help you go up or down the stairs on your bum.  Place the USBA on the landing at the top of the stairs.  Sit on the top step of the USBA, scoot down to the first step, then the floor, then down the steps.  When coming up the stairs, continue scooting up the steps to the top of the USBA.  Turn to the side and stand up.  The USBA is recommended by Physical Therapists.  Also check out the Stair Bump Aid for the bottom of the steps