The Matching Foundation
A good foundation, often called a boxspring or adjustable bed base, is as important as a good mattress. The box springs take a lot of the nightly wear and tear and contribute to the bed's overall comfort and support. Never put a new mattress on an old foundation. When you select your new mattress, buy its companion foundation - the two are designed to work best together. In fact, buying the mattress without its matching foundation may affect the terms of the warranty.