3-Season 5 ° F / - 1 5 ° Stay warm on cold-weather climbing, backpacking and mountaineering trips with this feature-packed, superior 600-fill goose down bag with our Drizone waterproof/breathable shell.
Sierra Designs’ 100% nylon Drizone™ waterproof/breathable fabric does a suburb job of sealing out wind, rain, and snow while venting internal moisture, helping you stay dry, comfortable and protected in any type of weather. Sierra Designs selects 2-layer, 2.5-layer, and 3-layer Drizone™ fabrics for different equipment pieces to provide the best blend of weather protection and moisture management for any activity.