Patrick McMurtry wrote a review of Norrøna Bitihorn Dri1 Jacket - Men's on September 19, 2014
Familiarity: I've put it through the wringer
Every person needs at least 6 jackets: down parka, heavy duty ski shell, ultralight windbreaker, a nice synthetic for cool mornings and around town, a cool soft-shell just because, and a great light windproof, breathable, waterproof jacket for all-weather running and other all-weather aerobic activities.
The bitihorn Dri1 is just about the perfect lightweight all weather jacket for running. At 7.5 oz it may not be considered an "ultra-light" but it is very light, takes up little space, and gives the protection you need in a massive downpour or running all day in a snowstorm. It's great for running and the perfect shell for backpacking. It's just substantial enough to make you feel like you have something that will hold up to good use in nasty conditions. I've have experience in all conditions and this jacket gets it right! The hood tightens with an elastic drawstring from the back. I find it works best with a brimmed hat underneath. It has two massive pit zips to dump extra heat - very nice. I find this material better breathing and more water resistant than gore tex. There's no science behind that, just my gut feel after experience with both. This was the first Norrona product I ever bought, and started my love affair with this brand. 5 stars for being a waterproof, windproof, breathable jacket that rocks the trails.