Hi-Flex - Highly flexible cuff extra comfortMid-Foot Bandage - Stabilizes the central part of the foot and provides sufficient cushioning in the shoesToe Protection - Cushions and reduces pressure pointsHeel Protection - Generous cushions to protect the heel and pressure pointsComfort Padding - Integrated padding system where the foot needs protection the mostPro-Fit: Exceptional fitting technical sock helps to prevent injury and boosts performancePro-Active: Multi-functional sport sock provides your foot with protection, comfort and durabilityPro-Fessional: Features the latest in sport sock technology for all your athletic activities92% Polyamid, 6% Elastan, 2% ElastodioneSizing:Small - U.S. Shoe Size 5.5 - 8.5 Medium - U.S. Shoe Size 9 - 11 Large - U.S. Shoe Size 11 - 13