Fit: Designed in close collaboration with professional Cyclist & Technicians to guarantee top performance & highest comfort. UPPER:2D Micro Adjustable Aluminum Buckle, AICS Adjustable Instep Closure System & Safety Lock Strap System. PERFORATED TONGUE: Comfort Fit Tongue. HEEL CUP: All new injection molded anatomical heel cup will not deform or weaken. Anti-tendonitis form with internal non-slip treatment for the best foot stablilty & control. Reflective inserts provide maximum visability in low light conditions. HEEL GRIP INSOLE: " Fit Comfort Insole". Combines natural materials with three technical inserts which adapt to the users foot shape & retain memory. Removable.SOLE: Gaerne Evolution Sole Moisture transfering Liner Handmade in Italy Fits most pedal systems • Air Ventilation System• 2D. Micro Adjustable Aluminium Buckle• Fit Comfort Insole• A.I.C.S. Adjustable Heel Cup Instep Closure System• Woman Fit Design• Safety Lock Strap System• Comfort Fit Tongue