85% nylon, 15% spandex Truform 8875; medical support hose; unisex style durable knit; 15-20 strength Graduated Compression Soft top will not constrict leg; defined Heel enhances fit; roomy comfort toe for sensitive feet Improves circulation for extended sitting, standing, travel, pregnancy, muscle recovery, swollen legs Helps relieve Swelling, varicose veins, spider veins, sore aching tired legs, Edema, DVT blood clots Made in the USA; Measure according to size chart; Latex-Free; Nylon and Spandex construction