Great warmth-to-weight ratio. Get this in time for the summer mountaineering season! Great for any alpine adventures, winter hiking, ice climbing belaying layer, skiing, etc. From manufacturer: Insulated jacket for alpine adventures Pertex Endurance fabric withstands repeated adventures DWR finish sheds light precipitation Hydrophobic down resists collapse when exposed to moisture Wire-brimmed hood maintains an open field of view Hem drawcord seals out drafts Material [external] Pertex Endurance (20D nylon), [internal] 20D nylon, DWR finish Insulation 800-fill hydrophobic European goose down Fill Weight 6 oz Fit regular Length hip Center Back Length 29in Hood yes Pockets [external] 2 zippered hand warmer, [internal] 1 zippered security Claimed Weight 15 oz