When sunny skies turn grey in an instant pull out the Black Diamond Fineline Stretch Rain Shell. Whether you're taking on multi-pitch climbs or weekend backpacking trips, breathable rain and wind protection will be there in an instant with this packable rain shell. It's made with a BD. dry membrane that stops water from soaking through, blocks alpine winds, and won't have you feeling too stuffy. The Fineline's stretch fabric and underarm gussets make this a perfect active shell, so when you're reaching for the next hold you won't have anything holding you back. Your hood is helmet-compatible for alpine safety and weather protection all in one, and when blue skies return you can stuff the jacket into its own pocket and clip it onto your pack or harness thanks to its handy carabiner loop.