The North Face Summit Tsirku GTX Pro Bib Pant

What Our Gearhead® Experts Are Saying: "These bibs are my go-to when I know the weather won’t hold back. The GORE-TEX Pro fabric is bomber in blizzards, and the articulated fit keeps me mobile when I’m skinning or bootpacking. The venting and smart pocket layout are lifesavers on long tours, and the kickpatches hold up to sharp ski edges." We step into the North Face Summit Tsirku GTX Pro Bib Pant when we’re chasing storm days, steep lines, and big mountain objectives. Built with GORE-TEX Pro 3L, these bibs set the standard for waterproof, breathable protection, ensuring we stay dry from pounding snow to long, wet skintracks. The alpine-inspired fit is articulated to move with us, keeping comfort intact whether we’re grinding up a bootpack or dropping into a powder-filled chute.Technical design rounds out the details that make the Tsirku our alpine workhorse. A stretch-woven upper bib adds coverage and flexibility, while full-length AquaGuard zippers double as entry points and ventilation. Mesh-lined inner-thigh vents and Chimney Venting™ panels regulate heat, and an integrated low-profile belt lets us dial in the fit on the fly. Thoughtful storage—like zippered thigh pockets with internal gear clips and a radio loop—keeps avalanche tools and essentials secure, while reinforced kickpatches and hem binding protect against ski edges and crampons. From storm laps at the resort to technical expeditions deep in the backcountry, the Tsirku bib is built to weather it all.