![]() more from front to back, as if the tail still existed. And while this seems to defeat the point of a wind-cheating helmet, though wind tunnel testing, Giro found that the air still moves around the helmet. The general design of the Air Attack was based off of the frontal shape of Giro's Selector time trial helmet. Giro looked at how air moves around different helmet shapes and mated the aerodynamic qualities of a teardrop design with the ventilation and compact fit afforded in a traditional helmet. But, a teardrop-shaped aero helmet is not legal in mass-start races. ![]() And this end, it seems logical that you'd want to wear one for every event. 51-55 cm, 20"21.74" MSRP: $168 Aerodynamic helmets are proven effective in taking time off of your race against the clock. Free Cross Sell, Cross promote, eBay Marketing, eBay listing Apps, eBay Apps, eBay Application. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. These charges are the buyer's responsibility. Taxes, and charges are not included in the item price or shipping cost. International Buyers– Please Note: Import duties. If a helmet is out of stock or not available you will be notified immediately via email and given the option for a full refund or to backorder the helmet until it becomes instock again. All Helmets are shipped out within 3-5 business days. Internal channeling Sizes: Super Fit™ Small- 20" 21.75" 51- 55cm) Medium- 21.75" 23.25" 55- 59cm) Large- 23.25" 24.75" 59- 63cm) Attention: If you order this helmet today it will ship to you the first week in April. Clear/Silver Flash available) Wind tunnel aided design, Removable X-Static comfort padding, Featherweight webbing with Slimline buckle Construction: In-Mold polycarbonate shell with EPS liner Fit System: Roc Loc Air Ventilation: 6 vents. ![]() Aero/Tri Features: Optical shield w/ magnetic attachment(Gray/Silver Flash included. ![]() With an enhanced airflow design and the all-new Roc Loc® Air system, this helmet is the new benchmark in performance. Features a magnetically fastened eye shield for wraparound eye protection that’s easy to remove during pre-race or warm-up. Its compact, lightweight and super-aerodynamic design slices through air to deliver a hyper-efficient ride. The new Air Attack™ Shield delivers a dose of free speed. Giro Air Attack Shield Road/Aero Bike Helmet Our first Air Attack™ was a revelation in styling and performance for all types of riding. ![]()
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