For long, exposed approaches, summit naps and sunny sessions at the crag, the Black Diamond Alpenglow Hoody keeps you covered when sunscreen just wont cut it. With UPF 40+ and BD.cool mineral based in-fiber cooling technology, which reflects 71% of near-infrared rays, reducing the perceived temperature while you wear it. The Alpenglow Crew also features Polygiene odor control technology, an embedded fabric treatment that uses silver-chloride to inhibit the growth of odor-causing bacteria, allowing you to wear it more and wash it less. Plus, with an under-the-helmet hood and pullover design, the Alpenglow hoody offers the ultimate in performance and long-wearing comfort.