Petzl Meteor III Helmet: Faithfully Lightweight

The Meteor III is the best helmet I have ever worn, and it's so light and comfortable that I no longer have any excuses to leave my helmet behind on any adventure, local crag or big alpine route alike.
Pros: Light; comfortable; breathable; cool orange racing stripes for speed.
Cons: Durability is questionable, but hey, that's just the trade-off with lightweight helmets.