Over the years, one of the things I have found to be a problem when putting sheets on a Tempur-pedic mattress, is that after a night or two the sheets tend to bunch up or wrinkle and they become uncomfortable. In the past I have alleviated this issue by purchasing elastic straps that clip to the sheets and run across the corners of the bed and hold it tighter. Due to the description of this product (The special strap system) I thought that I would be getting a similar result. This product is very comfortable when freshly cleaned, but I wish it performed a little better, like my expectation.