Bed BoostTM is the sagging mattress support that provides individualized comfort for the ultimate sleep experience. Simply slide the Bed BoostTM inflatable air cushion between your mattress and box spring and use the pump to inflate. Bed BoostTM is completely 100% customizable for total body support so you can fully adjust to make your mattress like new again! Bed Boost is perfect for back, side or stomach sleepers. Get the comfortable supportive sleep experience you deserve. With Bed Boost, not only do you get rid of those imperfections but you also customize your bed so it's specially designed for you!