My 12-year-old pair of Chaco's finally had the grip warn off the bottoms. I looked at getting them re-soled by Chaco and it cost $50+ Shipping. These were $50 new and although they no longer have the Vibram sole, they fit instantly and had no break in period. Love the arch support that Chaco provides! This version is the Classic Z style, but the cloud version. They are a little softer than the originals, but they are significantly lighter, which is a good thing. A single original Sandal weighed 18.7 oz and the new one weighs 13.7 oz. I loved the originals, but they were a heavy sandal.