Chaco Men's Z 1 Rapid Pro aquatic flora Papillio These little robots are programmed Extinct These little robots are programmed to report back all things naughty and nice…without the creepy smile The model has an open selvage Chaco designed this all new outsole in collaboration with Vibram and put it to the test with real life outdoor enthusiasts through our trusted field test partner Mountain Equipment Research Group to ensure a best in class design These sandals combine the comfort and water capabilities you expect from Chaco with 6X the grip on wet river rock compared to other adventure sandals for ultimate water performance