A sustainable reimagining of Sierra Designs best-selling Whitney down hoody. They stuffed as much RDS (Responsible Down Source Certified) 800-fill DriDown as possible into their top-selling Womens Whitney Down Hoodie, resulting in the best-insulated jacket that keeps you infinitely warm when the temperature plummets yet packs down small when the activity level ramps up. Responsibly sourced down is treated with a hydrophobic finish, helping to retain the downs natural insulating properties and fluffy loft, staying dry 10x times longer, even in wet weather. Sierra added details like an overstuffed hood and a high collar to keep the elements out and three zippered pockets to keep the essentials in.