The vibram wolftrack clipless sole is designed toimprove traction and braking while ensuringunparalleled grip on dry or wet surfaces.the shape is optimized for hooking and unhookingfacilitated, and the angular lugs ensuremaximum effectiveness in traction and braking.the eva midsole reduces weight and improvesshock absorption.the slw3 closure system, the only one with a gradual releasegradual, allows millimeter adjustment of the scarpa quickly and intuitively.the upper is constructed of ripstop and tpu with antiwear also made of tpu positioned on the toe box.