Men's Nebitron Pro Insulated JacketIf you need hardworking synthetic insulation that you can stuff in a pack and wear anywhere, the Nebitron Pro is built to hold its own. Powered by new, high lofting, synthetic PrimaLoft Silver RISE insulation, it delivers instant warmth and burly protection, with greater resilience in cold, damp conditions. Offering mountain utility and climb specific features, its geared up for winter hikes, mountaineering, and bitter belay ledges. Loose fill