I have worn chacos for 37 years..they make my feet feel good..these are not chacos they hurt my feet ..the attachement to the sole is hard plastic that hurts my ankle bone(Chacos  are made of soft material).and the sole has made a large boil form on the bottom of my foot..i have a doctors appointment today..im so disappointed I think these are knockoffs and want to send them back Ive tried to get used to them but they HURT