The Sonnet™ is a favorite in our Women’s Series collection, offering acclaimed 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 Tunnel™ vents and the comfortable convenience of the adjustable Roc Loc® 5 fit system. And with the light weight and durability of In-Mold construction, it won’t weigh you down.
In-Mold polycarbonate shell with EPS liner
Roc Loc 5
25 Wind Tunnel vents
Sonnet: Women's Series Design
The Sonnet is a great addition to our Women's Series collection, offering an amazing fit for riders who enjoy great routes as much as a swift pace. The slim shape combines impressive ventilation thanks to 25 Wind Tunnel vents.
The Women’s Series™ is a diverse collection of helmet styles, fits and prices tailored to the demands of female riders. While the level of
detail and range of colors is unique within the Women’s Series helmets, they do not feature a unique “women’s fit.” That’s because there
is no anatomic difference between women and men’s heads except for the average skull diameter measurement. And since Giro helmet
sizes cover 98% of the human population, we believe the Women’s Series offers more options to women than any other brand.
WIND TUNNEL™ VENTILATION
Giro helmets are developed utilizing our proprietary Wind Tunnel™ ventilation system. This elaborate design combines active vents
in the helmet’s shell with exhaust channels inside the helmet that thrust fresh, cool air over and around the rider’s head while forcing
heat and stale air out. It’s the most effective cooling system available, and a difference you can feel every time you ride.
SUPER FIT™ ENGINEERING FOR BIKE HELMET
Our proprietary Super Fit™ sizing system is based on “human scale factors” data and over 25 years of handcrafting helmets. By creating helmet molds in up to 4 adult sizes to match the human body’s form, our Super Fit™ sizes comfortably and securely fit riders, and feel like they are custom made just for you.
ROC LOC® 5
The industry benchmark in comfort, stability, adjustability and weight savings. In addition to enhancing the fit and comfort of 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. And it’s lighter than comparable systems too, making it the ultimate in skull-hugging luxury.
The In-Mold construction process permanently fuses a light-yet-durable outer shell with the helmet’s impact-absorbing EPS foam liner,
enhancing the strength of both parts. This fusion process reinforces areas around vents and ribs, creating a one-piece ‘exoskeleton’ that
allows the helmet to be lighter, more durable, and better ventilated than helmets with shells that are fastened or adhered to the liner.