DESIGN: BioViz reflective elements for low-light visibility 3-bolt road cleat & SPD compatible Three supple straps offer a strong closure with easy on-the-fly adjustability Features a women's specific shape and fit IN-SHOE COMFORT: Bonded Seamless Upper delivers all-day riding comfort, breathability and durability Anatomic three-strap design comfortably secures foot and is easy to adjust EVA foam and rubber heel bumper gives stability and walking comfort DURABILITY AND TRACTION: 1:1 Composite Power Plate with carbon fiber forefoot insert provides lightweight stiffness and durability (stiffness rating 8) Stiff full nylon sole designed for easy pedaling to reduce foot fatigue