Whether we're getting the goods off Great Western on a pow day or seeking out sidehits in Minny Basin come springtime, the Backcountry Cottonwoods Gore - Tex Shell Bibs have us covered with waterproof, breathable performance in a earth - friendly design for big days at the mountain. We made this pair of shell bibs intentionally with an updated, Pfas - free 2 - layer Gore - Tex membrane to keep winter's worst at bay, along with robust features such as inner thigh vents for quick cooldowns, inseam gusset for added mobility, and a ton of pockets to keep essentials close at hand. Our favorite new feature is the self - adhering bib straps : with limited hardware to slow us down or make us uncomfortable, we still dial in the perfect fit for a full day on the hill.