Norrona knows layering, and that includes the Senja Alpha90 Zip Hooded Jacket. It's not your basic hoodie-its hybrid construction deftly mixes technical, eco-friendly materials for a warm but highly breathable build that keeps us comfortable on the trail as we're running singletrack or hiking switchbacks. The Senja features a wind-resistant nylon shell with extra Polartec insulation in front with a more breathable fleece in back to balance warmth with breathability. That helps regulate our temperature as the weather changes or the intensity of our activities changes. It also features a snug-fitting hood, zippered Napolean pocket on the chest, and thumbholes for versatile layering, making this a technical hoodie for our favorite mountain pursuits.