- ATOP micrometric wheel tightening system- Upper: Knit triple-layer nylon- Breathable and removable EVA foam insole- Outsole: R250 (rigid, light, comfortable) Stiffness index: 7- Non-slip walking pads- Position indicator the wedge (LOOK MEMORY EYELET) - Compatible LOOK, SHIMANO SPD-SL, TIME- Weight +/- 600g per pair (size 42)