NITRO N501 APEX Full Face Road HelmetIntroducing Nitro's newest Helmet, The N501. The Nitro N501 is an affordable, adaptable helmet with a surprising array of features, including an internal drop down sun visor, impressive aerodynamic performance, efficient ventilation, and an expansive field of vision. The shell is of thermoplastic construction, and the inner liner is of Dry Comfortable fabric. This new N501 sport range helmet comes with Tinted and clear Visors. Look cool and feel