How to Remedy a Hump in the Middle of My King Size Mattress

Flip and rotate the mattress at least once each week. Turning your mattress helps eliminate humps, ridges and sagging, and keeps the mattress firm.

Place a bed board under your mattress, on top of the bed springs. A bed board helps make the mattress firmer, creates a more even sleeping surface and prevents the mattress from sagging. You can purchase a bed board from medical supply stores, or you can make one using 1-inch plywood. The board's measurements should equal the measurements of the mattress.

Try a mattress topper for a smoother sleep experience, which makes your mattress hump less bothersome. Mattress toppers are thick, quilted covers that attach to the top of mattresses and are made out of feathers, foam, synthetic materials or latex. Natural latex is preferable for its comfort level and resistance to dust mites, and the material is hypoallergenic.

Sleep more in the middle of the mattress, rather than on the side. Over time, this reduces the hump. If you share the bed with a partner, try snuggling more in the center of the mattress. If that's not possible, spend some time reading or watching television in the middle of the bed before going to sleep.

Pound your mattress twice a week to help even out the texture and smooth away humps, extending the life of your mattress. Use something heavy, like the bottom of a pot or pan.