Whether you're hitting the gym or hitting the trail, you can throw on the Under Armour Phenom 4. 0 Crew Sock for wicking comfort and strategic support. You've got ArmourDry technology to wick sweat and keep your feet dry and comfortable as you move, with ventilation channels for increased breathability. Dynamic arch support gives your feet light support to help fight fatigue, while strategic cushioning reduces bulk and adds comfort. Anti-odor technology helps keep your socks fresh over time, and left and right specific socks help give you an anatomical fit.