Get a good night's rest atop this body conforming, medium firm mattress. The interior make-up consists of pocket spring coils and foam. Pocket spring coils are individually wrapped innersprings that act independently, providing superior motion isolation and support to the contours of your body. The handles will help you move the mattress around easily. This mattress is perfect for a platform bed or trundle. The mattress can also be placed on adjustable bed frames. Requires foundation or box spring with the use of a standard bed frame. Once you cut the plastic, the mattress will start expanding! Your mattress will return to its original shape in 2 to 5 days. Enjoy sleeping on this comfortably constructed mattress for many years to come! You can prolong the lifespan of your mattress by acquiring a mattress protector.