When space is at a premium and every gram counts, these ultralight waterproof pants provide shelter from unexpected showers while stuffing down to palm-size dimensions when no longer needed. They’re so light they’re hardly noticeable, whether tucked into your mountain running vest or stashed in your pack on lightweight thru-hikes. With exceptional packability, breathability, and a stretchy, ergonomic fit that's easy to pull on over trail shoes or walking boots, this is the ultimate barely-there rain protection.