Sockwell Featherweight Fancy - Our Lightest Weight 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.Graduated Compression Leg; 15-20MmhgNon-Cushion SoleSeamless Toe ClosureSku: SW100W-901FemaleAdult