One of the most rugged backcountry bibs ever built, the Apex MTN-X 3L Bib is designed to handle challenging weather conditions and the deepest days. Made with a three-ply shell, stretch fabric, and YKK waterproof zippers, it’s fully seam-sealed to keep you warm and dry when the day’s mission goes long. The bib also features a transceiver pocket and two-way zippers at the back opening that double as vents for uphill comfort on the skin track.