I was using a king size sheet on my Twin XL mattress for a year. Finally decided to get some sheets that fit. These sheets are very soft. Don't look like they will get nubs after multiple washings. Fitted sheet is elastic all around. I got a GREAT deal on a set of 1200tc Egyptian Cotton pillowcases a few months ago(OMG, Heaven). Wish I could have afforded an Egyptian Cotton sheet set. These will do fine though(at 1/6th the price). Better than expected. Great price too. I would recommend these.