Best sleeping pad for side sleepers. The slower the mattress returns to its original state or remolds, the more likely complaints are. It does not lose shape when heated because it is designed with SureTemp foam. The many layers of the DreamCloud mattress absorb movement quite well. This is one of the longer periods on our list. I can literally feel th box spring under it when I sit up. It removes pressure while cooling the temperature at night. One disadvantage is that it takes a while before you can "break the pillow. What this coil-on-coil design loses in motion isolation, it gains in temperature control. I got it on a good sale one year over at Sears.