ELITE FIT, Carbon UD X-Vent outsole * HRS-90 system, Wet-type microfiber leather and cycling mesh upper * COOLMAX Ergo Air Cool Stuff blue and Hot Stuff red insoles * Main strap with ratchet closure and Velcro straps, Double-position ratchet closure * Approximate weight (size 41/1 shoe): 270 g/9.5 oz