Drifa Zip Vest is a lightweight layering vest for alpine mountaineering and other mountain activities. The clean fit moves easily under a shell and stays comfortable through long days on the trail. The PrimaLoft® knitted high loft lining delivers efficient warmth, moisture management and reliable comfort during stop‑and‑go ascents. When not needed, the vest packs into its own pocket, making it easy to stow without interrupting your pace. A versatile layer for high‑intensity days, moving freely from trail and mountain runs to ski tours in shifting conditions.