The mattress cover functions perfectly how the company intended, but isn't sized properly to fit my mattress. I order a queen which is the size bed that I have from casper and it doesn't fit properly. Even after washing like it suggests for a better fit, the cover makes the surface of my mattress bumpy and I cant get a flat smooth look with my sheets ever. The mattress cover is constantly rippling and bunching under the sheets because it is way too big, even after washing. If you purely want this product because of the function it provides then you will be satisfied, but if you enjoy a crisply made bed you will be disappointed.