A full crew length option within the women's Adrenaline line, the SmartWool Women's Adrenaline Light Crew sock stands up to the demands of serious trail running, mountain biking, and go-fast hiking. From the moment you slide the socks on, the feet feel relaxed. Underfoot cushioning reduces the pounding on a rocky trail and the soft SmartWool fibers remain dry throughout the day. A flat-knit toe seam reduces chafing and provides long-lasting durability. The SmartWool Women's Adrenaline Light Crew sock is also designed to flex with the foot, not twist, bunch, and wander as the miles stack-up. Elastic arch and ankle braces keep the sock in place. Similarly, a special instep contour flex zone allows foot and sock to move as one.