If you're finding your mattress topper isn't the only thing that's moving, there are other ways you can make your bed more stable. If your bed frame, sits on the wooden floor, it's likely it could slip or slide around, and if your bed frame is quite old, it could shift as you lay or even sit on the bed. A great way to make your bed more stable and secure is by adding slats or investing in a box spring. Bed frame slats are used to support the mattress by sitting on a bed base. Not all bed frames come with them, but box springs have built-in wired or wooden slats to hold heavier mattresses. They lie across the width of the base to hold the mattress up and take the pressure off the frame itself.