I was really disappointed in this product. It was my fault to not look and see that it's basically a glorified eggcrate topper but when it says it comes with a cover you expect a zippered cover for it. It's a slick satin material that just makes the sheets slide off. I have deep pocket sheets and a deep pocket mattress pad cover that won't fit over it and I don't have a very tall mattress to begin with. Wish I would have looked around some more before paying way too much for a topper.