Under Armour Performance Tech 6 Pack Crew Socks - The training sock that stays put. Locked-In Fit keeps it secure on your heel, sweat-wicking fabric dries fast, and arch support reduces fatigue. Medium cushioning plus breathable mesh = all-day comfort. Durable material wicks sweat & dries really fast; Locked-In Fit design keeps sock securely on heel for an adjustment-free fit; Medium cushioning throughout foot for comfort & protection; Mesh panels on top of foot for added breathability; Built-in arch support band; Odor control technology minimizes odor; 6 pairs of socks; Style: 6015145;