DESIGN: Generates higher power with finer resolution using BOA L12 closure mechanism, ensuring improved performance Extremely strong patented carbon composite sole on bottom 3 bolt offers compatibility with standard SPD-DL pedals, meshing smoothly with a wide range of bikes IN-SHOE COMFORT: Stretchable upper material exterior creates flexi-comfort to fit easily, allowing an excellent match with your foot, using integrated X-Comfort Zone technology Moisture-wicking properties evaporate sweat through the material for dryness when feet produce sweat, while cool and comfortable with breathability and ventilation, offering COOLMAX(R) patented insole to eliminate hot feet after long rides