Description of Chaco ZX/2 Unaweep Sandals - Women's The forefoot control of Chaco's classic Z/2® combined with the foot-cradling support of the double-strap design makes this style popular among long distance hikers and river runners. Equipped with the Chaco pull-through strap system and BioCentric™ footbed, this sandal is all about fit. From steep mountain hikes to deep river crossings, you would be hard pressed to find a performance sandal that sticks to your feet as well as the ZX/2®. Features: BioCentric footbed Two narrow polyester straps Wrap-around toe design Classic basket weave