The packaged sheets are perfectly wrinkle-free and smooth. After washing and drying on permanent press and removed immediately to fold and test the wrinkle resistant quality, I found these to not be as advertised. They fit the bed nicely with the deeper pockets for the fitted sheet and were comfortable but they feel a little thin for 400 thread count. No overheating which is great but if you want a crisp look for your sheets, you’ll need to break out an iron to get these smoothed.