Heatgear Baseball Socks. 86% Olefin/ 13% Nylour/ 1% Spandex. Welt-Top construction for comfort and fit. 1x1 Rib with spandex throughout the leg, built in vents maximize foot ventilation. Cushion footbed for maximum shock absorption and protection. Fully reciprocated toe and heel construction with flat toe seam for perfect fit. Knit-in arch support reduces foot fatigue while increasing blood circulation. Color: Black, Navy, Royal, and Scarlet