8% Polyester, 14% Lycra, 6% Nylon, 5% X-Static. X-Static Is A High Performance Fiber With A 99.9% Pure Silver Layer Permanently Bonded To The Surface Of The Textile Fabric. Silver Gives X-Static Unparalleled Anti-Odor, Anti-Bacterial And Heat Regulation Qualities. Medalist's Signature Skinetics Moisture Transport System Which Rapidly Wicks Moisture Away From Your Skin And Pushes It Out Over A Wider Surface Area For Quick Evaporation. Skinetics Dries Faster Than Other Competitive Products. Superior Thermal Insulation. Microfiber Comfort. Durable Flat Seam Technology. No Maintenance Required.