Sockwell Men's Incline Graduated Compression 32% Merino Wool, 32% Stretch Nylon, 31% Bamboo Rayon, 5% Spandex Made in US Moderate (15-20mmhg) graduated compression recommended for Biking, Hiking, Walking, and Running. Perfect for flight travel, and when you are on your feet for long periods of time Promotes circulation, minimizes swelling, and helps reduce fatigue- Perfect for Work, Sports, Running. Improve your performance and stamina with the best fitting compression sock on the market Sock length fits over the Calf of your leg. Minimizes swelling of the feet and ankles Size Medium/Large fits US shoe size 7-10, Size Large/X-Large fits US shoe size 10.5-13. Ultra Light cushion sole provides comfort and has a Non-abrasive Seamless Toe closure Offers 4 zones of graduated compression starting at the ankle and moves up the leg which keeps your toes comfortable without feeling any pressure Moderate (15-20mmHg) Compression-Recommended for All day, Everyday. Ideal for Prolonged Sitting, Standing, Travel, Minor Swollen /Tired Feet and Legs Ultra-Light Cushion Sole, and Mesh Breather Panels, Help Energize Your Step Seamless Toe Closure, no irritating toe seam Spandex Throughout prevents slippage and ensures a snappy fit throughout the day