This mattress protector has a very crinkled top pad, but the sides of this fitted protector are extremely thin. So thin you must be extremely careful that you dont pop your fingers thru this very thin material. Doesnt look like pics at the website. The top on the website looks like a nice smooth material. Not a crinlkled piece of material with a waterproof backing. The sides are not going to last long. The thin gossamer like material makes it really difficult to stretch, so holes will be soon. The website again shows a picture of the bed, and again, the sides look like they are a material that would be much thicker. Not a gossamer like instead. I am stuck with this mattress pad cover. There are lots of bed pads, just not for a mattress that has 18in pockets.