Equally on task sprinting up a frontcountry trail or shuffling along under the weight of a loaded pack, Capilene® 2 has your back - along with the rest of your torso. Its open-knit construction breathes, wicks moisture and clocks the fastest dry time of all Patagonia's performance baselayer fabrics. You can wear this crew on its own in warm weather or as insulation beneath layers. With a rib-knit collar that's soft against your skin, offset side seams, thumb loops for secure hand coverage and offset shoulder seams for chafe-free comfort under shoulder straps. Made of 3.6-oz Polartec® Power Dry® 100% polyester, with 20-UPF sun protection and Polygiene® permanent odor control. Fabric is bluesign® approved.