MAKE YOUR MATTRESS LOOK AND FEEL LIKE NEW. Fix uncomfortable ugly sags in your bed and restore its beauty. SagsAway military grade foam is the best sinking or sagging furniture saving repair tool JUST PLACE DIRECTLY UNDER SAG. Whether your bed sags in the middle, the edge where you sit to put your shoes on or elsewhere, place the insert under the deepest sag between the mattress and box spring 2 DIFFERENT SIZED PADS FOR YOUR COMFORT NEEDS. No mattresses sag the same way. 1 side may need more padding than the other. SagsAway foam comes in 2 pcs measuring 27 x 20 x 1 and 20 x 12 x 1/2 inches