The stretch 3-layer Aeron bibs provide targeted lightweight breathability and protection for ski touring and splitboarding. Made with a sustainable bio-sourced polyester face fabric, they also feature a 20K/20K membrane for unmatched waterproof breathability, reinforced with a PFC-free durable water repellent treatment and waterproof zips. While providing maximum protection against the snow and wind, these bibs include vents for easy temperature control up any skin track or when breaking trail. The long side zipper makes these bibs easy to put on, and the many pockets are practical. For extra comfort, the elastic adjustable suspenders and stretchy lycra panels provide more than enough freedom of movement. Ready for all your big mountain adventures, these straight fit bibs are built for long days riding untracked powder.