I bought the sheets for my tempurapedic mechanical split king bed. Since store selection for Twin XL is very limited, I decided to try Wayfair. When I did my research in a store, one of the good brands had 650 thread sheets and they felt fantastic, silky soft, just beautiful. Based on that I thought that 800 threads would feel even better.  Even after wash the sheets are stiff, have a rough feel, and look cheap. I was going to send them back, but didn't have time, and now is too late. This weekend I'll order my sheets through the store, I will know exactly what I'm buying. I do not recommend this brand.