Giro Prolight Road Bicycle Helmet 2014 Exclusive Colors. With the Giro Prolight Road Bicycle Helmet, the operative word is Pro. Wait...no...the operative word is light. Well now you get to have it both ways. The culmination of an exhaustive ground up design and engineering process paying homage to Giro's original Prolight that set the standard for modern lightweight helmets in 1985 Giro has once again re defined what an ultra lightweight Bicycle Helmet can be. This Bicycle Helmet is a ridiculously lean 193 grams, and has pro features like Giro's Xstatic padding inserts for maximum comfort, 25 vents for maximum cooling, awesome graphics for maximum coolness, plus the Roc Loc SL elastic fitting system that keeps the Bicycle Helmet hugging your head comfortably all ride long. From time to time while out on the bike you may check your reflection in a window because quite simply this minimalist wonder gives the sensation of having nothing on your head at all.