The Outdoor Research Men's Helium HD Jacket is a lightweight rain shell for backpackers and climbers that require more features in wet weather. The Helium HD uses Pertex Shield+, a 2.5 layer, 100% nylon, 30D ripstop fabric that cuts down the weight while remaining 100% waterproof. Whether you’re blocking a hard rain or whipping wind, the jacket stands up to it with water-resistant zippers and a fully adjustable Halo Hood. The Helium II is stripped down, where the Helium HD adds pit zips, zippered hand pockets, and Velcro cuffs. The large still only weighs in at just slightly over nine ounces and still packs down super small, saving weight and space in your pack.
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