Why?: Lasts Longer and extends life but needs to be maintained properly Flipping Mattress You can still turn your mattress over, rotate it from one end to the other, and flip back over. Caring for your mattress on a regular basis is no different than moving your furniture in your house to change wear on your carpet in high traffic areas or rotating car tires to increase its life. While this may not seem possible most two sided beds being made today cost the same as one sided versions for just a few dollars more. Either way this makes them a huge value that is rare and hard to find in today's economy. It is pretty much common knowledge that today's one sided mattresses don't last as long as their counter parts. A longer lasting mattress means green because precious resources used to build a mattress are not needed as quickly due to extended life. So why overpay on a mattress set when you can get a quality brand name mattress set at a factory direct price from Surplus Furniture and Mattress Warehouse! Flipping Mattress & Its Warranty