The Outdoor Research Men’s Helium Down Vest is a warm puffer vest for your cold-weather layering system. Insulated with lofty 800+ fill power goose down, it’s super lightweight and packable. The Pertex Quantum Diamond Fuse fabric features a smooth, tight weave for excellent water-resistance and durability. Diagonal baffles on the sides and shoulders offer a streamlined fit, and since it’s a vest, you can keep your arms free to move around and do all sorts of cool stuff. You know, like pump your arms with ski poles or maybe reach for a beer after a long day.