Material Composition: 50% Cotton, 28% Bamboo Viscose, 15% Polyester, 6% Nylon, 1% Elastane. Design: Contrast Panel, Contrast Stripe. Fabric Technology: Anti-Shock. Flexible Comfort Toe, Cushioned Footbed, Achilles Protection, Ankle Support, Elasticated Ribbed Cuff, Mid Foot Bandage, Heel Protection. Simply Essentials Men's Heavy Duty Fusion Power Work Socks (Pack Of 3) in Black Size: 6-11