The Dynafit Radical Down RDS Hood Jacket provides the rare combination of warmth and extreme light weight. On cold days, it keeps you reliably warm and has impressive comfort. That comes from the premium RDS-certified 800 fill goose down with a loft of 800 cubic inches with a down-feather ratio of 95/5. Down is well-known for its excellent ability to insulate at a very low weight and small pack size. Water-resistant DOWNTEK® treatment allows down to maintain its density and loft even when exposed to moisture and thus it continues to keep you warm. For additional weather protection, the lightweight nylon outer shell is wind- and water-resistant. Stretch underarm side panels ensure improved breathability, temperature regulation, and freedom of movement. Stretch at the hem and cuffs keep the jacket where it belongs and prevents cold air from getting in or warmth from escaping. Both front pockets and a chest pocket offer room to stash small essentials and keep your hands warm at the summit. Designed with the backcountry athlete in mind, but also for anyone who likes light weight down comfort, the Dynafit Radical Down RDS Hood Jacket is a must have in your jacket quiver.