New Balance Unisex 2 Pack Crew Core Performance Socks 68% Polyester, 30% Nylon, 2% Lycra Spandex Made in US NB DRY moisture management technology quickly moves sweat to keep feet cool and dry. NB Fresh treatment with Silvadur keeps socks fresh and fights odors Cushioned foot bed designed to minimize shock absorption. Stability Fit built in for enhanced arch support Stability Fit Arch Support & Hold Soft Touch Spun Polyester Lightning Dry Moisture Management Reinforced Heel & Toe and Half Cushion Anti-Microbial Finish to Fight Odor