Reviewed by SJG from NY, NY on Tuesday, July 9, 2013
Bought two of these for my kids. They are the same model but are not the same. The blue is dated 2012 and has a wheel adjustment mechanism. The white is dated 2007 and has a slide lock mechanism. I find the wheel on the newer helmet much easier to use. Giro says helmets should be replaced every three years. I don't know if this includes shelf life or 3 years of actual use. If you worry about the age of these types of things just be warned that some of the colors could be old stock.