When trails go from dusty to muddy, we pull the Rab Cinder Downpour Jacket out of our pack and press on. This rain jacket boasts a 2. 5L membrane that fights off heavy rain while allowing us to breathe, an adjustable hood for added coverage, and underarm vents that help us dump excess heat while we move. The result is a jacket that helps us reach the summit, even if the clouds ruin our view.