High Tech Compression Socks are circular knit on state-of-the-art knitting machines using only top quality yarns. They provide the perfect level of compression to energize your limbs before, during and after all athletic activities. These products will help to enhance your athletic performance. Details: Turn Welt Top / Padded Heel / Strategically Padded Sole Areas / Graduated Compression / Padded Toe / Anatomically Shaped Left/Right Foot / Impoved Muscle Efficiency & Reduced Muscle Vibration. Available in 2 sizes Adult Size Medium 9-11 (fits ladies shoe size 5-10 or men's shoe size 4-1/2 -8-1/2) or Adult Size Large 10-13 (fits men's shoe size 9-12-1/2 or ladies shoe size 11-12). Made in the USA.