Patagonia's 3-layer technical alpine hard-shell pants built with GORE-TEX Active fabric deliver optimal breathability for modern, done-in-a-day alpine climbing objectives. Thunderheads roil over the Ramparts like clockwork, unleashing sheets of afternoon rain, sleet, and hail in Canada’s magnificent Tonquin Valley. For climbers driven toward storm-threatened summits, the Leashless Pants have alpine-specific features in a pared-down waterproof/breathable package. The lightweight, 3-layer GORE-TEX Active fabric (2.9 oz. 30-denier 100% nylon) delivers Gore’s highest level of breathability. A low-profile, partially elasticized separating waist (2-way zippered fly, snap closure, internal drawcord adjustment) stays sleek under a harness, and the two mesh-vented pockets (with coated waterproof zippers) sit on the thighs, clear of your leg loops. The cuffs open and close with calf-length, watertight zippers, secure with a snap and cinch with a drawcord; cuffs also have scuff guards, tie-down loops and a lace hook. A slim, articulated fit allows mobility without bulk.