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Redesigned for 2014 with a sleeker silhouette, this new hoodie features ThermoBall™, powered by PrimaLoft®—our new synthetic alternative to down that achieves phenomenal warmth in cold and wet weather. As compressible as down, the clusters of round synthetic ThermoBall™ trap and retain heat within small air pockets to provide effective insulation, even when wet. Wear or pack this ultralight zip-front layer for reliable thermal insulation in a variety of winter conditions.
The new synthetic alternative to down, ThermoBall™ achieves the warmth and compressibility of down while also offering the wet-weather insulating performance of synthetics. The small, round PrimaLoft® synthetic-fiber clusters closely mimic down clusters by trapping heat within small air pockets to retain warmth. This revolution in insulation has been independently tested by Kansas State University and is proven to offer the warmth equivalent of 600-fill goose down.