The first time you wear the men's Quantum Long Sleeve Zip Hoodie, you'll be amazed by its combination of lightweight, warmth, and softness. If you wear it during a hike, ski touring, or running in cold weather, you'll be struck by how well it breathes as you warm up. The midweight 260gm merino terry fabric helps draw moisture away from your body, and remains comfortable in a huge temperature range, with eyelet mesh panels on the sides to maximize breathability. And the more you move, the more you'll appreciate the way the Quantum Long Sleeve Zip Hood is engineered, with raglan sleeves, flatlock seams and a fitted hood. It's so comfortable, so easy to move in, you'll want to wear it for every cool weather activity. And because it resists odor naturally, you can.