Fitting: Regular Plus Last. A perfect fit, with higher comfort in the toe box. Closure: With 2 Velcro straps and a Double Ring Speed Lace adjustment system. Upper: Suprell - Tech, with Morpho Cage A-M. The special "space frame" design ensures greater stability, breathability and comfort. Heel Cup: Pre-moulded ergonomic TPU heel cup to ensure better heel containment. Arch support: EVA and anti-stretch fabric. Sole. Diadora Diapan Technology, Racer CR, composite reinforced The special design of the extremely thick "space frame" sole has reduced weight and thickness, guarantees good rigidity for a direct thrust and effective power transmission. Fitted with "memory Look" system and "High Grip Finish" in the pedal cleat area.