Eurosocks Sprint Supreme Sock 80% microsupreme/ 15% nylon/ 10% Spandex Imported Dynamic cushioning provides comfort and eliminates abrasion offering athletes high performance protection, less foot stress and a faster recovery time Compression starts mid foot to support arch and plantar fascia, reduces injuries, not an overnight quick fix, part of your long term foot care program Drystat our exclusive fiber gives optimum moisture control reducing growth of bacteria and fungus for a healthier environment,Dry feet less blisters Designed and manufactured using the latest technology in our Italy factory, Never outsourced, Compression experts since 1998, your feet will thank you