Today is your speed-training day, but damnit, its totally raining and windy out. Your Norrna Womens Bitihorn Dri 1 Jacket is un-phased. In fact, the waterproof, windproof fabric and adjustable hood beg for days like this. Pull on the Bitihorn, and take advantage of the underarm zippers once you get going and need to dump excess heat. The transparent, ultralight fabric means this jacket weighs a scant 9 ounces.