The uber-breathable Patagonia Nano Air Hoody waltzed into this review and stole the show - providing a wide range of thermoregulation and mobility. Featuring 60 g/m2 of breathable and warm Fullrange insulation in combination with a super mobile face fabric, wrapped in a stylish package, it earns our Top Pick for Breathability for the third year in a row! Thermoregulating from the mid-20s to the high 50s, we could keep this jacket on while hiking, winter running, and backcountry skiing. Our testers love the full range of colors offered in addition to its incredible features that make it cozy and comfortable in cold weather. Given its form-fitting design and stretchy fabric exterior, we thought it was a perfect piece to either wear above or below another layer. That said, our taller testers mentioned the arm length was a little short, and its look is a little boxier than most contenders.
The jacket that tried to push the Patagonia Nano Air off the podium for the most breathable pick is the brand-spanking new OR Women's Ascendant Hoody. While the Patagonia Nano Air is not as lightweight, compressible, or breathable as the Outdoor Research Women's Ascendant Hoody, our testers liked it better because it performed over a broader range of conditions and seemed to be more durable. The Nano Air also provides better weather resistance than the OR Women's Ascendant Hoody, earning our Top Pick award. So, if you're looking for a reliable insulated jacket that will keep you sheltered from most elements while breathing and insulating all at the same time, this magnificent Top Pick is our recommendation for you! Wear it as a stand-alone piece or as an additional mid-layer in really cold conditions.