Sockwell Good Vibes compression sock is crafted in the USA of fine merino wool and rayon from bamboo with spandex throughout the sock for superior fit and comfort. 15-20mmHG compression promotes circulation, minimizes swelling and reduces fatigue. Great for prolonged sitting or standing, flying, travel and exercise.Ultra Light Cushion SoleSeamless Toe ClosureGraduated Compression Leg; 15-20mmHGSku: SW152W-850