The Sonnet™ is a favourite in Giro's 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. The addition of MIPS technology means that in an accident the liner will rotate independently around your head. Watch the video above to see the benefits.
Roc Loc 5 System This groundbreaking fit system provides an entirely unique user experience with an unmatched level of comfort, stability, adjustability and weight savings. With Roc Loc 5, you can easily dial-in both fit tension and adjust vertical position with a single hand. Just twist the dial for a tighter feel on rough terrain, then back it off a notch and relax across the flats or a warm climb. Even with these remarkable features, Roc Loc 5 is still nearly 40% lighter than its popular predecessor, Roc Loc 4.
Wind Tunnel Ventilation Giro helmets are developed utilising their proprietary Wind Tunnel™ ventilation system, which combines active vents with internal exhaust channels that thrust cool, fresh air over and around the riders head while forcing heat and stale air out. This significant increase in air channelling makes a difference that riders will immediately feel and appreciate.
In-Mold Construction In-mold construction fuses a tough polycarbonate outer shell with the helmet’s impact-absorbing foam liner. The fusion process allows Giro to sculpt better ventilation systems, so In-mold helmets can be lighter and cooler than traditional helmets.
Super-Fit A great helmet is so comfortable that once it’s on, it virtually disappears. Giro’s proprietary three-size Super Fit system is based on “human scale factors” data and over 20 years of crafting helmets for the best bike riders in the world. The result is pure Skull Hugging Luxury, a helmet that fits 98% of the world’s population, yet looks (and fits) like it was custom made just for you.
• MIPS is a Brain Protection System
• Rotational motion can cause brain injuries
• The low friction layer allows a sliding movement of 10–15 mm, in all directions, reducing rotational motion to the brain during impact
• MIPS adds protection
If you have an accident in any helmet it's a good idea to replace it. Giro offers the peace of mind that if you have an accident wearing one of their helmets they will replace it at a reduced price. Find out more here.
|Head Circumference||cm||47 - 51cm||51 - 55cm||55 - 59cm||59 - 63cm||61 - 65cm|
|Head Circumference||inches||181⁄2″ - 201⁄8″||201⁄8″ - 212⁄3″||212⁄3″ - 231⁄4″||231⁄4″ - 244⁄5″||24″ - 253⁄5″|
We will happily refund any item purchased on Wiggle if returned to us within 365 days; excluding Wiggle gift vouchers, nutrition and customised products, except when faulty.
Please note: Bikes and other bulky items cannot be returned using our local returns service (where applicable). Please contact us and we can arrange to collect these from you using our discounted courier rates. There is a fee for all collections, except for faulty products.Returned goods must be unused and supplied with their original packaging, unless the goods are faulty. Wiggle will pay the return postage costs for any faulty items.