This jacket is fantastic! I've used the Helium II for the past several years. Whether it is during a rainy commute to or from work, or a scrambling up a fourteener; this jacket is the lightweight rain protection you need. I've used it everywhere from a rainstorm in the city, to pairing it with a down puffy to extend my layering system down below freezing. And this jacket stands up to the test. The only issue I see people having us with it's length. It stops right at my waist. Some people might want it to be a little longer to provide a little more coverage. For me, I recognize that this doesn't detract from the function and saves a small amount of weight. All in all, it's a great jacket!
The Heathen Hiker