2XU Women's Thermal 3/4 Compression Tights 80% Nylon 20% Elastane Imported Drawstring closure Improved muscle alignment for increased power & endurance Supports and protects gluts, abductors, IT band, quad & hamstring muscles Medical Circular 70 Denier knit construction with brushed loft interior for added warmth Muscle Containment for reduced vibration & oscillation, less muscle fatigue & damage Invista LYCRA for Certified Gradient Compression