SIZE - 13.5K - 4Y YOUTH FIT & DESIGN Ultra-thin, lightweight construction for a barely-there feel Material wicks sweat and dries really fast Anti-odor technology helps prevent odor in the sock Embedded arch support reduces foot fatigue Fitted heel contours around the foot for a better fit Six pairs per pack Country of Origin: Imported Fabric: 97% Polyester/3% Elastane Brand: Under Armour