Ayacucho Womens Atlas Vest Best Selling Fabric: 100% Nylon Insulation: 90/10 Goose Down 600 fill power Zippered hand warmer pockets Elasticated sleeves Drawcord hemThis Atlas Vest offers lightweight, packable warmth, suitable for either technical or day-to-day use. The light insulation makes this vest an ideal layering piece to provide you with that extra warmth when you get to the top of your route, but also very well suited to wearing whenever you're out on a crisp, chilly day and don't need a jacket. All the benefits of down when you don't need a big, thick, expedition layer!The construction is tailored to this less extreme level of insulation. Micro-baffles hold the light down filling precisely in place for optimum performance - big baffles would allow it to migrate - and the drawcord hem ensures the warm air doesn't escape. Perfect.