83% Nylon, 17% Spandex Made in the USA Truform 1774; Ladies fashion style support hose; dress nylons; 15-20 strength graduated compression Lace trim top band with silicone grip liner; Knit heel pocket keeps sock in place; Breathable Improves circulation for extended sitting, standing, travel, pregnancy, muscle recovery, swollen feet 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