Like many people who have reviewed this, I bought it because my foam mattress was like a heat sink. Funny, my brother and best friend each bought the same mattress and it doesn't bother them at all, I must be a hot sleeper. I bought a thin pad that was supposed to help, but it made little difference. I then bought a "cotton rich" thicker pad from Walmart. It wasn't deep enough for my mattress and I tore the flimsy cheesecloth-like side of it the second time I made the bed. It bunched up when I tossed and turned. I figured the reviews on this one seemed to be what I was looking for. It's very well made, deep enough for my mattress with a thick knit side with good elastic. The padding is smooth and I like to slide my legs over the sheets and feel how comfy and smooth it is. I have only slept one night on it, but it was magical. It's firmly in place, and according to my Fitbit (check it out, those are great, too) I wasn't restless at all. I'm looking forward to going to bed tonight. I've done a few reviews on here, but I don't know if I've felt so happy about a purchase I've made on Amazon.