1000 Mile Compression Socks 47% Tactel 37% Nylon 15% Elastane Lycra 1% Polypropylene Imported Tactel - Rich wicking yarn which helps keep feet cool and dry. Graduated Compression - Specific compression zones which help to speed the process of moving old blood out and getting new oxygenated blood in. Flat-Seam Toe - Gives you an improved ergonomic fitting. Arch and Ankle Braced - Offers extra support and enhances fitting and wearing comfort. Materials - 37% Nylon, 47% Tactel, 15% Elastane Lycra, 1% Polypropylene