A healthy stride throughout the body begins with properly supportive footwear. The Chaco Z/1 sandal's BioCentric™ footbed offers a biomechanically correct contour so each step you take properly aligns your foot from heel strike to toe off. First time wearers immediately notice the difference this alignment provides quickly becoming converts to the Chaco fit and feel. The sculpted heel cup on the Chaco Z/1 men's sandal concentrates the fatty pads underneath the heel thus promoting natural heel cushioning to work in tandem with the lightweight polyurethane midsole. First time wearers and longtime Chaco fans alike always appreciate the innovative pull through strap system that allows precise adjustment using just one buckle. The straps are interconnected underneath the foot eliminating strap blowout at an inopportune time. The Chaco Z/1 sandal also features a durable Vibram® Unaweep outsole for anything from scrambling on granite to fording a muddy stream.