Troy lee designs d3 composite reflex greyyellowit wasnt easy to improve upon the class leading design and function of the d2 helmet but tld made it happen by integrating next level safety devices and making functional improvements they raised the bar for head protection in the genre with the d3 new features and improvements new head form shape to improve fit and feel of the helmet which increased eps to frontal crash zones new 3d cheek pads updated shape and contour to better fit the