This insulated jacket is what you need this winter the peter storm womens down frost jacket has a downproof 100 polyamide mini ripstop shell the 9010 duck down insulation has 600 fill power for cosy warmth features 100 polyamide mini ripstop downproof durable water repellent finish 9010 duck down insulation 600 fill power to keep you warm zipped handwarmer pockets tricot lined adjustable hem locks in warmth