Marmot Women's Mercer Jacket - S - Black - New. PRODUCT DESCRIPTION Item No. 10496859 The Marmot Women's Mercer Jacket is an insulated jacket for daily winter wear. Cold weather, yeah it's gonna happen, but now you can stay toasty warm on your way into the city. Not only has this puffer been packed full with 700 fill power down, but it utilizes Marmot MemBrain 2L fabric for waterproof, breathable protection. This means you'll be plenty warm, dry and look cute too. We ship fast, and we ship out same business day.