Love that it has a water and dust mite putter cover  barrier. And the mattress is super comfy too. I actually bought these mattresses for my nieces but I layed on it and would sleep on it myself. Its that comfy. So the water resistant,dust mite resistant, hypoallergenic cover that goes on the mattress is a bonus. And for the price you cant beat it. I would buy it again if I needed to.