A Vibram TC 1 rubber outsole with 4. 5mm lugs gives the Chaco Men's Z2 Unaweep Sandal hard charging capability and aggressiveness for traction on a wide variety of surfaces, so go ahead and explore. Designed specifically for wide feet, this Z2 sandal features a Luvseat footbed approved by the American Podiatric Medical Association for comfort and natural anatomical support. The textured footbed combined with a custom injection molded ladder lock offers slip resistance, even when wet. A durable, adjustable high tensile webbing heel riser gives you customized fit with enough give to keep your feet comfortable when the trail gets rough. A polyester jacquard webbing upper with toe loop wraps around your foot and through your midsole to keep things secure.