Fabric Features Fill: 100% European Goose Down. 750 loft Outer: Water resistant, quick dry, low absorption, packable and comfortable Inner: Charcoal grey Pertex Zips: YKK zips Vest Fabric Features Fill: 100% European Goose Down. 750 loft Outer: Water resistant, quick dry, low absorption, packable and comfortable Inner: Charcoal grey Pertex Vests: have nylon lycra binding around armholes and hem Zips: YKK zips