I spent the last two weeks testing these to se if any hanger marks were left in my soft shirts. Up until now, I've had to avoid hangers nearly altogether to stop this from happening. I've tried these with 6 different problem shirts and, after two weeks, I can only see the very slightest of dents (if I look very very closely) which do not show at all when worn. I'll be buying more of these as a follow up to use exclusively now. Appreciate the look and craftsmanship of these.