Road bike shoes colours white black red yellow blue upper materials mesh nylon sole material carbon composite breathable fasteners buckle strap velcro compatible with look look keo time spd sl spd r shoe size 38 type mens shoes series sidi genius intended use road bike shoe technology sidi caliper buckle sidi high security velcro fastener sidi millennium 4 outer sole sidi replaceable heel pad sidi soft instep 2 anatomically shaped strap sidi he