First, it's a strange fit. I got a large but it feels more like a medium. The arms are fairly tight and when I zip it up it feels tight on my shoulders as well. However, the hood is completely floppy and even with the drawstrings doesn't get that tight. The zipper feels like a cheap thing and not a mountaineering level device at all. The hoody itself seems well constructed and I like the breathable design. But I wouldn't use this as anything other than a spring running / hiking top or fall/winter baselayer. It's just not that warm. It's 50 degrees today and windy and walking around town with my t-shirt and this I was quite cold. The cut (I believe) is supposed to be "athletic" but it just makes me look pudgy, unlike the fleece I have, which is perfect.