The LS2 Rapid is lightweight, aerodynamic shell that offers fully adjustable vents, ported through the liner for dynamic flow-through ventilation to keep you cool They use 2 shells for the smallest, lightest possible helmet in your size The face shield is scratch and U.V. resistant and can easily be changed without the need for tools The comfort padding is hypoallergenic and breathable, and uses a neck roll design to seal well and keep wind noise to a minimum LS2 uses laser cut, 3D foam for the ultimate in comfort and no hot spots A DOT approved quick release chinstrap provides a secure fit Meets or exceeds DOT standards