Shopping for memory foam adjustable beds? Here are some tips to help you find a good one. First off, your body’s shape, weight, and height factor in the selection process. 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 of a box spring, the mattress you buy is usually placed on a platform. You might be using a conventional mattress with a box spring before. If you’re replacing the mattress, you will need to place plywood on top of the box spring. You get better support this way. For added comfort, you might want to find out the benefits of using a memory foam bed mattress topper. You can put this slab of foam on top of your mattress for better support.