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The Mountain Hardwear Sub Zero Down Vest gives backcountry skiers and alpine climbers the core warmth they need on the mountain or simply around town. Featuring the same 650-fill down as the Sub Zero Jacket, the vest weighs just 18 oz. It boasts fleece lined hand pockets, a interior zip pocket, and reinforced abrasion areas. One-handed hem drawcords make this vest a snap to adjust on the fly. It fits into a small included stuff sack—cram it in a jacket pocket for emergency warmth.