The Capilene Lightweight Bottom, made from recycled polyester double knit treated with plant-based HeiQ Mint odor control, wicks moisture fast and stays fresh through long days of climbing and descending. The gusseted crotch and next-to-skin fit move with every stride, letting the rest of the kit do its job without interference underneath. Minimal, low-bulk seams reduce chafing over hours of movement, while the perforated elastic waistband dries quickly and stays comfortable under a shell. What Our Gearhead(R) Experts Are Saying:"I wore these under my ski pants on a bluebird powder day and never noticed them once, which is exactly the point. They wicked sweat fast on the skin track and stayed comfortable all the way through the descent."