These are probably my 6th pair of Chacos. Not because they wear out their Vibram soles, but because they keep getting better and better! Every season new colors and style varients come out that I can't not have. I used to work in the outdoor biz and would be on my feet about 9 hours a day on a cement floor and go home with happy feet. (think Dubuque Ham). They even have a contoured footbed that rocks, unlike the flat nasty uncomfortable footbeds of the past. I also like them in the airport - easy on, easy off. These shoes are the best. . . I wear them all year round - and in Wisconsin that is saying a LOT for a sandal!