It wasnt easy to improve upon the class leading design and function of the d2 helmet but they made it happen with the troy lee designs d3 carbon full face helmet by integrating next level safety devices and making functional improvements they raised the bar for head protection in the genre with this d3 riders like sam hill aaron gwin steve peat brandon semenuk and cam zink refuse to wear anything else when they pedal with styles and colours to fit any personality the only question is