Remarkably light but obnoxious
This helmet is wildly light and by far the most comfortable helmet I've worn yet. For comparison, I've climbed in the Petzl Ecrin Roc, Elios, and Meteor III, Black Diamond Half Dome and Tracer, and Grivel Salamander. The Vector breathes surprisingly well and has a real cool look to it, but when on my head it's HUGE. This helmet looks super silly on me, regardless of color choice (though darker colors are not as bad). If you don't mind the look (or happen to look good in it) this helmet is awesome.