These sheets are amazing. They're soft right out the package, but I always wash sheets before use. This is often the first indicator of quality. There was not a single thread out of place upon pulling them out the washer or dryer. They were also softer than they went in, which was a pleasant surprise. I got these for my teenage son who is hard on sheets. We put them on a 14" mattress, and although the sheets can fit a larger mattress they did not sag or look lose. They were indeed wrinkle resistant as far as I can tell. I left them in the dryer an hour after completion because I forgot about them and there were virtually no wrinkles. My son enjoys them and they dont trap heat which is a big issue for him, so this is a win.