I ride to work about 8 miles and get pretty sweaty in the process. Yesterday it was about 58 and I was wearing a lightwieght wool baselayer, the squamish and then a cordura backpack with no vents. The wool, where the pack was, was soaked, I could have probably wrung it out. The rest was totally dry and no condensation had collected on the inside of the squamish, even where it was pressed into my sweaty back by the pack. Pretty impressive. The hood is too deep when cinched down, its almost helmet compatible. the fit is athletic. I wear it in the humid east. I'm 6' 3" 190 and wear a large.