Beat the effects of flying with the powerful 2XU Ultra Light Flight Compression Socks. Graduated compression improves blood flow and lymphatic drainage, removing blood lactate and speeding up muscle repair. Graduated stamping technology and overfoot compression accelerates muscle recovery. Polygiene antibacterial application repels odor and inhibits bacterial growth for prolonged freshness. Vented toe panel offers greater breathability. Compression Fit: 15-20 mmhg rating. MD-1/MD-2 and LG-1/LG-2 vary in calf size. Please refer to the size chart for detailed information. 78 percent nylon, 13 percent cotton, 9 percent Lycra. Machine wash, tumble dry. Imported.