A gravel cycling shoe with our Powerstrap Velcro closure system for an enveloping fit and an X4 outsole providing targeted stiffness and rubber tread for mixed surfaces. - X4 nylon outsole - with rubber tread, stiffness index 6 - Weight: 292g (size 42- 1/2 pair) - Sizes: 36-48 (37 to 47 also in half sizes) FEATURES - Powerstrap: foot-wrapping Velcro closure designed for an enveloping fit - X4 outsole: targeted stiffness and rubber tread for mixed surfaces