I switched over to Chacos after the Teva flip flops I've worn for years were redesigned to be "more feminine" i.e. way(!) too narrow for my crazy wide feet. After reading other reviews, I decided to order a size larger than normal - this larger size is perfect.  The sandal is a little more narrow than I would like, but definitely manageable. The solid arch support is a big plus, though I think it will take my feet a little bit to adjust to them.