Ecosox Viscose From Bamboo Women's Running & Sport Tab Socks 80% Viscose from Bamboo, 10% Polyester, 5% Nylon, 3% Spandex, 2% Rubber Made in USA or Imported Do Not Bleach, Wash Normal, Do Not Iron, Dry Normal (Medium), Do Not Dry Clean Eco Friendly Bamboo Construction Provides Advanced Moisture Wicking Performance Arch Support Keeps Socks Snug on Feet and Fights Fatigue Bamboo Viscose Fibers Help Control Foot Odor Helps to Prevent the Formation Blisters Exclusive Ecosox Construction Helps Regulate Skin Temperature