When they say extra firm, they aren’t kidding. Thankfully this comes with a quilted top so the pressure points have something soft to push against while still getting lots of support. I have had reconstructive hip surgery so I need very firm support and this delivers. I’m 220 pounds and my wife is around 175 and this gives great support for us both and we don’t feel each other move during tossing and turning. The mattress can be rotated for even wear and tear, but can’t be flipped. Our standard sheets fit snuggly. We didn’t need to buy anything special to fit the mattress. 

Definitely recommend.