Oh my gosh this thing is fantastic. It's made my bed so much more comfortable and it's already a comfortable bed. It is not a miracle worker as far as making you feel cooler at night, which I didn't expect it to be but I do feel that I am sweating a lot less and probably feel about 40% cooler at night. It feels like sleeping on a cloud, I think everyone should get one!

Pros:
-low price
-light weight 
-very soft
-didn't wake up with aches and pains
 
Cons:
-it tears somewhat easily when trying to drag it to move it into place on a bed (although that is probably true of most foam mattress covers). I'd recommend lifting it and setting it the way you would a blanket.
-the eggshell texture is a little weird to get used to

*some reviewers complained about the smell, but I hardly smelt anything. And the faint smell I did notice did not smell bad at all.