Introducing 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 in 6 different colours to choose from and a option of Tinted and Iridium Visors are available. Look cool and feel comfortable and safe in the all new N501.