Bobby Griffinwrote a review of Giro G10 Helmet on November 20, 2009
This helmet is so comfortable and seems true to size, I wear medium Giro bike helmets and this G10 medium is perfect . This is a great upgrade from my old Giro Nine (8 years old). I like the adjustable dial fit in the back because it allows me to wear a thin hat if I want. Also the G10 has one switch that opens and closes all air holes. Good style, fits well with goggles, I dig it.