David S.wrote a review of Black Diamond Vector Helmet on November 5, 2012
Familiarity: I've used it once or twice and have initial impressions
I've only had this for a month, but so far I love it. It is so light I don't notice it, and it doesn't get in the way, at least any more than any helmet would. I wore it on the approach so that I wouldn't have to worry about it getting scratched in my backpack against the rack, but the vents worked well enough that it wasn't a bother. Speaking of the vents, the top isn't super greatly vented and it's sorta noticeable , but my head didn't get hot.
and the orange color is super awesome