Consider your body’s shape, weight, and height when you shop around for memory foam adjustable beds. Height is important, because the taller you are, the more dispersed your weight will be on the mattress. A good memory foam mattress does not require a box spring. Instead, the mattress you buy is usually placed on a platform. If you are replacing a conventional mattress with memory foam but not replacing your box spring, put plywood on top of the box spring to provide a stiffer surface and better support. For affordability, you might want to consider a memory foam bed mattress topper. You can place this slab of foam on top of your mattress for better support.