Add a stylish and functional layer to your outfit with this Marmot Women's Echo Featherless Vest. It is made of 100% recycled 30D nylon fishnet for lightweight durability, and the vest features 3Mâ⢠Thinsulateâ⢠Featherless Insulation to keep you warm without allergens. Marmot Women's Echo Featherless Vest Navy Blue, X-Small - Women's Ski Outerwear at Academy Sports