Nitro PSi sidewinder motorcycle helmet has custom designed aerodynamic multi tech constructed shell. It has PSi (pressure secured interior) Nitro's air pressure assisted helmet fitting technology which allows riders to custom fit their helmets for added comfort and security. It features adjustable ventilation at chin, fully adjustable visor and face ventilation, dual air filtration system at brow with open and close positioning, dual rear exhaust vents allow for ultimate heat dissipation, injection molded 3D visor with anti-scratch coating, quick release interchangeable visor mechanism, ultra comfort fit removable and washable liner system, pre molded removable nose guard/breath deflector, micrometric buckle for ultimate adjustability and perfect tension, anatomic luxury fitted cheek pads and comfort lining, dvs (dual visor system) integral to shell for safe riding in all light conditions, aerodynamic base trim stabilizing and air dam system. It is DOT and ECE approved.