The Mountain Equipment W FROSTLINE VEST is your ultralight down vest with narrow chambers and water-repellent DRILITE® Loft outer material that reliably protects the down from moisture. Ideal as the perfect thermal layer for ski touring, it provides warmth and protection without adding extra weight. Its small pack size makes it an indispensable companion in your backpack – whether as an insulating mid-layer or a windproof outer layer. Versatile, functional, and robust: with this vest, you are optimally equipped for mountain adventures.