The forefoot control of Chaco's classic Z/2 combined with the added support of their double-strap design make this style popular among long-distance hikers and river runners. Equipped with the Chaco pull-through strap system and BioCentric footbed, the ZX/2 is all about fit from steep mountain hikes to deep river crossings, you'll be hard pressed to find a performance sandal that sticks to your feet as well as the ZX/2.