Our best warmth-to-weight ratio in a durable, packable alpine vest for core warmth in severe cold. High-loft 1000-fill goose down provides lightweight, packable insulation with Coreloft™ utilized in areas prone to moisture. The 100%-recycled 20D Pertex® Diamond Fuse outer is light, windproof, and has a diamond-filament construction that adds durability without adding weight. Multiple pockets – inside and out – offer storage, and a stuff sack is included for transport.