We recently purchased a new, larger mattress so we needed a new mattress cover. My husband has dust mite allergies and we had this same cover on our previous mattress. I didn't hesitate to purchase the exact same one for our new bed. I am a very hot sleeper so my biggest requirement is that it needs to breathe well. It also does not make any noise when you move. We have had other brands of covers that felt and sounded like you were sleeping on a garbage bag. This one is nothing of the sort. 

My only concern with this one is that our mattress is 10â€ so the 9â€ would have been too small, but the 12â€ (which I purchased) is too big. I will likely put some kind of sheet clips on it to try and keep it taut. On our old mattress it fit like a dream, but that is a function of the mattress and not this cover. I highly recommend it!