The Giro Women's Sonnet Bike Helmet offers amazing fit and performance for riders who enjoy great routes as much as a swift pace. The slim shape offers impressive ventilation thanks to 25 Wind Tunnelvents and the comfortable convenience of the adjustable Roc Loc® 5 fit system. And with the light weight and durability of In-Mold construction, it wont weigh you down.
Women's Series collection, offering an amazing fit.
Super Fit sizing system is based on a human scale factors data and over 25 years of handcrafting helmets.
Roc Loc® 5 allows you to easily custom tune the fit tension and the fore-aft tilt of the helmet in seconds using a single hand.
In-Mold Construction fuses a tough polycarbonate outer shell with the helmet's impact-absorbing foam liner.
Slim shape and impressive ventilation
25 Wind Tunnel vents
Construction: In-Mold polycarbonate shell with EPS liner
Fit System: Roc Loc 5
Ventilation: 25 Wind Tunnel vents