I thru-hiked with this jacket. I didn't need it until the last 500 miles so I didn't notice that it was not, in fact, a rain jacket until it was too late. If you're outside in the rain for more than a few hours in this thing, you will get wet through the side panels. Not only that, but the zipper broke after my first 3 weeks of heavy use (I almost never used it before that) . I cannot recommend this jacket.