If you are in the market for a new mattress and may be switching mattress companies, do yourself a favor and double check the sizes of your current mattress and the one you are about to buy. It could save you a lot of time, energy, and money. Even though nearly all mattress manufacturers use the same names for sizes (e.g., King, Queen), the dimensions of those size vary dramatically. Wikipedia has a great mattress dimension chart you should consult before making your next purchase, especially if you’re switching manufacturers and/or the geographic area in which you are buying a mattress.