Five Ten Men's Kestrel Cycling Shoe 100% Synthetic Imported Rubber sole Boa Closure System Dual compound Mi6/C4 outsole to create a consistent feel on the pedals and maximize power output. Stiff carbon-infused shank to maximize power Non-Slip Heel Cup to reduce torsional flex; Mesh tongue and upper to increase breathability Synthetic toe for weather resistance and easy cleaning;SPD compatible