Make sure there is a Boxspring for lifter to slide on and function. This device will not work with mattresses on a bed frame that have a lip or raised edge. Studies prove that when using two tools, one placed on both sides of the mattress, bed making becomes faster and easier, particularly helpful when placing or removing bed skirts. The handle was specifically designed to allow you to use one hand or two; Insert the Mattress Lifter Tool between the mattress and box springs to lift your mattress 4-5 inches. Use the Mattress Lifter Tool to remove sheets easier, apply bed skirts quickly, tuck in linens and crisply smooth sheets;Use it to flip that last corner of a tight fitted sheet into place.