550 fill down combines with Columbia's synthetic insulation to create the warm, soft, and lightweight Women's Gold 650 Turbodown Vest. The mix of down and synthetic means that the insulation can retain heat even if it happens to get damp. On the interior, Columbia's Omni Heat thermal reflective technology reflects your heat back to your body for even more warmth. The angles and spacing of the baffles enhances and slims the style. Wear the Turbodown Vest over a sweater for cool autumn nights on the town, or layer it under a shell for frigid winter days on the slopes. Nylon ripstop shell fabric provides durability and resistance to moisture, while a drawcord hem and zippered hand pockets offer great fit and function.