This mattress cover does not move around and gives wonderful coverage. I have this one on all of my beds.Great price as well.We could not find any sheets or mattress pad to fit our Mattress Firm adjustable bed. None of them were deep enough and they all slipped off when the bed was raised and lowered. This mattress pad has been the best one yet. It still creeps up/off about once a week, but pretty much stays put the rest of the time. Good quality as well.We have several of his pillows. Bought a couple sets of the Giza sheets and they are all WONDERFUL. When this Mattress protector showed up we expected the same quality.Nope. Not. Even. Close.The protectors we received were paper thin and we were totally underwhelmed and disappointed. Ordered 1 and received 2. We folded it back up, put it back in the box, and sent them both back, and promptly got a refund. Will definitely be buying more sheets and pillows. For $90.00 there was no way this was up to the standard we expected...Fit as expected. Surrounds your mattress well and stays in place. Waterproof, cleans and dries easily.Timeline of order and quality. Personal use and needed when purchased larger mattress. Also purchased with 2 new My Pillows.Love them all.Stays on mattress well, soft.Fits nicelyit tore after only a few weeks use