Shipping was quick.  Just received and washed but have not slept on them so can only comment on the appearance.  Purchased white, XL deep pocket twin sheet set.  Have a  15" thick mattress and the fitted sheet fits with no problem.  They appear good quality with a tight weave and good stitching.  They have a nice soft and silky look and feel.  They have the appearance of being somewhat sheer as I can see my hand through the sheet, not sure if this is and indicator of long term durablity.  I could not find and indication of thread count or the type of fabric it was made from either on the website or on the packaging or on the label so I don't know if these are cotton, cotton blend or polyester.  They do not wrinkle after washing/drying.