These socks were designed with graduated compression and durable yarns to provide everyday support, the women's compression knee high socks help you stay more energized and comfortable while you work or travel. Made of 67% Polyester, 30% Nylon, 3% Spandex Mild Compression 8-15 mmHg Great for soothing swollen, achy feet and legs Invisiseam Ultra-Smooth toe seam Premium stay-up top keeps socks in place Fits shoe size 4-10