Built off of the success of the original kestrel the five ten kestral lace clipless shoe is designed to transfer power to the pedals as efficiently as possible with a classic lace closure the kestrel lace features a stealth c4 outsole and wider cleat interface that is compatible with every type of spd pedal the shank of the kestrel lace is nylon making it about 15 less stiff than the original kestrel while an eva midsole provides excellent shock absorption five ten kestral lace