Chaco Unaweep ZX2 Classic Women’s Size 7 Green Toe Loop Hiking Sport Sandals Great preowned condition no flaws The Z/X2 model features a double-strap design that wraps around the foot and through the toe loop, providing a secure and custom fit. The footbed is contoured and has arch support, which has earned it the approval of the American Podiatric Medical Association (APMA).