DESIGN: Standard Fit: Roomier fit offers more comfort for all-day riding 3 offset hook-and-loop straps IN-SHOE COMFORT: X-Comfort Zone: Ventilated expandable zone to accommodate a variety of feet widths and prevent numbness Outsole: Multi Air Flex nylon/fiberglass for easy walking; prevents heel pressure Breathable and ventilated insole DURABILITY & TRACTION: Attach your shoes to the pedals using SPD Cleats which makes your pedal stroke smoother and more efficient