From Black Diamond:

Built for mountain adventures, the Distance Wind Shell is an essential protective layer with added weather resistance. Featuring the Green Theme Technology revolutionary Breathable Water Protection—an all-new environmentally friendly PFC-free DWR that is superior in performance and durability to any other DWR solution—the Distance Wind Shell packs down and stows into its chest pocket with a carabiner clip loop, so you can attach it to your harness during fast and light missions that require emergency protection if the weather breaks.

• Featuring GTT Breathable Water Protection Technology- A revolutionary water-free and PFC-free DWR that’s superior in performance and substantially more durable than other DWR solutions.
• Air permeable fabric provides breathability for high output activities
• Climbing-helmet compatible hood
• Self-stowing in chest pocket with carabiner clip loop
• Adjustable hem
• Elastic cuff
• Weight: 98g
• Fit: Slim