FEATURES of the Serfas Men"s Palladium Buckled Road Shoe High efficiency ventilation Sewn in buckle pad/integrated buckle protection The high-end microfiber shoe material is featured on straps as well as shoe The offset Strap System provides a more comfortable wrap of the foot for those long rides Triple Density Sole with increased stiffness (Stiffness rating of 8) for added support allows more of your muscle power to turn into pedaling power Triple Compound Insole allows for more flex from the footbed to the upper leather for increased flexibility and comfort Has an integrated reinforced heel counter to hold heel down SPD compatible sole (Time, Speedplay, Look) Shimano Pedaling Dynamics or SPD"s are small and could be fitted in a recess in the sole, making it possible to walk (although comfort will vary) Wide toe box