Skins Women's A400 Compression Long Tights 76% Nylon/24% Spandex Imported World's first dynamic Gradient compression delivers more oxygen-filled blood to active muscles, increasing endurance, power, and efficiency Adaptive HEIQ technology for state-of-the-art temperature and moisture management Flat bonded/taped hems and flat sitting, flexible, chafe resistant A-Seam Specifically placed memory MX panels offer maximum support to key muscle groups and help reduce it band friction syndrome (ITBFS) SKINS performance compression: it's equipment, not clothing