Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: i recently bought the Giro Air Attack Shield helmet buy i lost the magnetic shield where can I buy the replacement
Document: When I purchase a helmet my decision is most heavily influenced by appearance, fit, and ventilation. All of which I weight equally with one another. When I bought my Air Attack Shield I had recently trashed a Catlike Whisper Plus that was damaged in a crash with a drunk driver. I'd decided to try a different brand because the Catlike felt like it fit more circularly shaped heads than oblong ones like mine (c-sectioned baby at birth).
I love this helmet! I bought the highlighter/black shield version. The fit is outstanding, the color is vivid and bright, and the visor is better than expected. The magnets work wonderfully. That was my biggest fear. The rocloc air system works well and is what I've come to expect from a Giro helmet. Just an awesome product!
The Air Attack Shield is Giro's latest incursion into aero helmets. The helmet is designed for those wanting a more aerodynamic helmet without having to carry around one of those martian-looking time trial helmets. The helmet is as compact as any other regular helmet. However, it is not the lightest of Giro helmets so if you are a weight weenie, you may want to look somewhere else.
The amazing thing with the Air Attack is I don't seem to need a dew rag and my head is not sweating like usual. The helmet straps are similar to the Giro Prolight. The helmet is smaller then a typical vented helmet it does weight 300gr including the visor. The Visor is fantastic not to close to your face very aerodynamic and has slots for extra airflow. The magnets that attach the visor are well placed and just the right amount of tension for single hand removal and reattaching to the helmet.
I am always very skeptical about buying the latest greatest gadget only to find some problem. But there are no such problems with Giro latest masterpiece the Air Attack fits exactly as there chart described and feels fantastic. Cycling in Florida in the summer is not a place you can wear a closed helmet my Giro Selector is parked on a shelf. Replaced now by the Air Attack she vents excellent at 18 mph I feel a good breeze flowing around my head as speed increases so does my cooling.
I really love the fit of the helmet and the face shield. The cooling effect of my head is as good as my road bike helmet (also a Giro). My head sweats a lot regardless which typically runs down my sun glasses clouding my vision. With the Attack shield, sweat still drops on it, but low enough on the shield (because of the position of the shield relative to my face) that is does not restrict my vision (a big plus in my book).
I am really glad I made the purchase! I recommend removing the small rubber nose guard on the shield. It serves no purpose because it is no where near contacting your face and it is a distraction while biking. It easliy pulls off. As for helmet size, my head is in the mid-range of medium road helmets. The medium Air Attack fit well with no problems. But you may want to verify your head size before ordering based on other feedbacks I have read.
This helmet can only be bought only since most bike shops don't stock this product. Finally bought this for my wife as a replacement of her previous cracked helmet due to a bike crash during a race.
Looks good. Fits Good. I keep getting compliments. I use it only for triathlons. Have other helmets I train in. Studies are pretty clear that it is effective in being aerodynamic enough. Buy the helmet with the visor for sure. You can always take the visor off, but if you buy the helmet without the visor, you can't add it. I always race with the visor and have never had any air flow issues.
Helmet fits and rides great! Bought it with the shield. I love the change in style. It feels safer...more sturdy than a vented helmet. All helmets must pass tests...so, not sure if it is actually safer. I also enjoy not having to wear sunglasses too! Nice design!
Answer: yes