In fear of going off topic
Been riding with the Air attack shield for a while now and I second what Prendrefeu saying.
At speed the cooling is great, even in +25C I can feel the air flowing over my head. (Buzz cut)
In long climbing situasions in hot climate I would go with something with more vents.
I think the reson the aero helmet thing has taken off is partly marketing and partly the cold weather in europe this spring.
The Air attack shield is the best crappy weathe helmet on the marke in my opinion. I really dont care about the aero thing. Living in Norway with the temperatures and weather we have here I think the less vented aero helmets are going to get increasingly popular. I for one welcome the trend, and if i get free speed then great.
The shield is in my opinion a bigger advance than the aero thing, hope someone comes up with a magnetic visor for a vented helmet. wery god for the dreaded wheelspray when drafting pluss no fogging when climbing in the rain.
I like the Evade but the Air attack (in black) is more minimalistic I think.
I also have the s-works prevail and with all the fins and stuff going on it really looks goofy compared to the air attack. (call me crazy)