Giro Trinity Bicycle Helmet. Sometimes the simplest designs are also the smartest. The Giro Trinity Bicycle Helmet provides a perfect option for riders who want a classic design that doesn't compromise comfort or performance. With features like In Mold construction to keep the weight low and the easy, one handed adjustments of the Acu Dial system for a quick, sure fit, you'll be good to go no matter where or how far you ride.
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