01. FEATURES X4 nylon outsole - with rubber tread, stiffness index 6 02. FEATURES Weight: 292g (size 42- 1/2 pair) 03. FEATURES Sizes: 36-48 04. FEATURES Powerstrap: foot-wrapping Velcro closure designed for an enveloping fit 05. FEATURES X4 outsole: targeted stiffness and rubber tread for mixed surfaces