WHAT! This thing is crazy light. Like, soooo light. Lighter than an emergency poncho. And water proof, like completely waterproof. If you want to be dry and comfortable, wear this. This is the kind of gear that you feel guilty about putting wear on because a work of art should be respected.
Price. I got this through a friend with a pro deal, that's the only way I could ever afford a piece of gear on this level. Also, it doesn't do shit to keep you warm. But it's not supposed to.