With a slim profile and exceptional ventilation, the Giro Sonnet bike helmet offers racers and recreational riders a versatile and incredibly comfortable helmet.
Dial-in fit system allows easy one-hand adjustment.
Twenty-five oversized Wind Tunnel vents allow generous airflow on hot days.
Roc Loc 5 Retention System provides optimal adjustability so you can dial in the perfect fit.
In-mold polycarbonate shell with shock-absorbing EPS liner ensures maximum impact protection.
SuperFit system uses data and science of human scale factors to engineer a custom-fitting helmet.