Sierra Designs DriDown™ is natural down insulation improved with a molecular-level polymer that provides a hydrophobic finish to individual down plumes. You no longer have to choose between the lightweight, compressibility of down and the "warm when wet" advantage of synthetic. By creating a water repellent down insulation, we effectively have removed down's downside. The result: DriDown™ stays dry longer, lofts better, and dries faster than untreated down, keeping you warmer in any environment.
© 2013 Sierra Designs. All rights reserved.