these are nice, the 2 inch thick is even better. buy the next size larger if you can, a king for a queen for example. they tend to shrink in the package before delivery and you would be better with too big than too small, yes? if your old mattress is very soft and worn these may not be enough but for most folks with an uncomfortable but still sturdy matress this kind of foam is a godsend as it was for me with my bad disks. memory foam pillows are very good too. Yes, memory foam is a bit warm in the summer so look for sateen sheets which are cooling. i did and it worked out well. thanks overstock! one more note- these smell a lot when you first open, so i aired out outside a few hours.