This is a very welcome item in our home. It appears to be what it is advertised to be.  We put it on our bed the day we received the order and were delighted to realize that not only does it stay on the mattress neatly, but it also holds our old sheets in place as they cling to the fabric on the protector!  We had not been able to find something that did that in all of our 58 years of marriage!  Hats off to Sleep Tite Mattress Protector!  We have noticed no 'noise' made by it as we turn over at night, and it is oh so soft! And it does seem to be waterproof as advertisded.