Armored flagship downhill/enduro SPD shoes shred hard with commanding control. Technologies Shimano Pedaling Dynamics – SPD is a system that performs whether you’re on or off the bike. It makes pedaling more efficient with a wide variety of shoe and pedal styles and the recess cleat makes walking more comfortable. You can pedal with greater efficiency, stability and comfort with the SPD system. Expanded Cleat-Adjustment Range – Set the initial cleat position according to the difference between shoe size and measured arch length. If the arch length is longer or shorter than the shoe size, the cleat maybe positioned fore or aft from the center line of the cleat range of the shoe by the difference of the scale. *For example, if the right shoe size is 43 and the arch length measurement is 44, the cleat should be positioned (distance A) forward, toward the toe end, from the cleat range center line of the shoe sole. Features Massive instep strap securely holds foot to support aggressive pedaling over any terrain. Armored lace shield tongue cover provides extra protection from debris. Speed lacing system allows fast, secure adjustments and it can stay easily under the tongue cover with hook and loop.