NuVein extra strength 20-30 mmHg Hosiery; Unisex opaque fabric; Conceals while it healsRoomy toe pocket will not compress foot, increases comfort for hammer toes, swelling, sore blistersSilicone grip dot-top lining prevents rolling and slipping; Knit heel pocket keeps garment in placeCrafted from durable hospital grade materials; Thicker medical weight yarns; Made in USAUse for varicose or spider veins, Edema, DVT, swelling, pregnancy, post surgery, blood circulation