Giro Savant MIPS Helmet (White/Black, Small (51-55 cm)) Authentic style and performance, with unmatched value. The Savant is an amazing fit for riders who enjoy great routes as much as a swift pace MIPS - All Giro helmets are designed to reduce as much energy as possible while meeting and exceeding stringent safety standards. The goal of Giros MIPS-equipped helmets is to reduce rotational forces. Giro believes that helmets equipped with this technology can reduce the amount of rotational force that may be transferred to riders brain in certain impacts CONSTRUCTION - In-Mold Construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbing foam liner. The fusion process allows for better ventilation systems, making in-mold helmets lighter and cooler than traditional helmets FIT SYSTEM - Roc Loc 5: The industry benchmark in comfort, stability, adjustability and weight savings. In addition to enhancing the fit and comfort of helmets, Roc Loc 5 allows you to easily custom tune the fit tension and the fore-aft tilt of the helmet in seconds using a single hand. And its lighter than comparable systems too, making it the ultimate in skull-hugging luxury SPECIFICATIONS - Ventilation: 25 Vents. Color: White/Black. Size: Small (51-55 cm)