Upper made of breathable and ultra light microfiber. Comfort and suppleness. Insole Ergo sole Foot Control. System with plantar support, stabilizing in the back and anti vibrations insert and DS2 membrane allows a better support, better bearing and foot comfort. Ergo cut with breathable insert. Fits the colume of the shoe to the foot's volume more easy. Ventilation increased. Aerated Microprene instep. Improvement of comfort, instep support and distribution of the closure force. SMC2 closure system with double adjustment of the buckle fixing. Interchangeable rack. Variation of strap's length according to the instep. Can be entirely dismantled and put back together. Aerated micro mesh for a good foot ventilation. Plantar support system, reinforced heel arch system. The key elements of teh shoe are bridled in order to improve the support. Soft reflect security for a better visibility. Sole MFC5 with differenciated rgidity made of plaited carbon with user replaceable heel pad. Privileged performance.