You want the warmth and performance of down, without the delicateness. That''s where the Helium Down Hoodie comes in: A stronger, more durable down hoodie that doesn''t add an ounce of weight. Diamond Fuse technology infused in the shell fabric protects the hoodie''s 800+ fill down insulation, which has passed rigorous standards for responsible sourcing. The hoodie version of our Helium Down Collection is the only style with exclusive waterproof Diamond Fuse fabric on hood and shoulders for added weather invincibility.