Lotto - Zhero + FG-3F (White/Light Olympic Blue) - Men's: Innovative talent and purest weight saving technologies for bursts to burn off opponents. Water-repellent microfiber upper with EVA padding and modular lacing. Removable anatomical insole with Shock-Absorber in the heel zone. External heel counter to boost stability. Strobel board lasted. Nylon and fiberglass frame. PUNTOFLEX across tread in the metatarsal area which allows correct foot flexion and excellent rebound. Great for firm grounds.