Chaco - Z/2 Colorado (Sweetwater) - Men's: These limited edition sandals are exclusive to Zappos.com, so pick up a pair today! ; The added security that you get with a pair of Z/2s is like the difference between keeping your cash under the mattress and putting it in the bank. The Colorado outsole provides a balance of slip-resistance and traction. Made of TC-1 Vibram non-marking rubber. Z/2s feature the same anatomically supportive footbeds as our Z/1s, offering all day support whether you are carrying a 40lb. pack or a bottle of cabernet. To increase forefoot stability, the Z/2 has a toe loop that wraps around your big toe. Folks who find thongs uncomfortable are surprised by the comfort of the wrap-around toe loop. Single non-slip buckle will not wear out or clog with sand. If you enjoy activities that demand an increased level of performance and lateral security, Z/2 will satisfy. Z/2s have been the footwear of choice for Appalachian Trail through-hikers, Zambezi raft guides, and canyoneers around the world.