Moderate Support, Unisex Knee Highs, Reinforced heel and toe, 1 Pair Made in USA. Certified medical grade compression garment. Approved for Class II Gradient Compression Therapy. Jomi Opaque knee highs are crafted of a Nylon and Spandex yarn designed to be cool and breathable. The two way stretch design makes them easy to wear and the opaqueness will mask varicosity, blemishes and scars. 20-30 mmHg Compression helps prevent and treat: varicose veins and spider veins, edema, blood clots and DVT. It is effective in relieving fatigue, pain, stiffness, soreness, swelling and cramps. PERFECT FIT: JOMI is a Medical Quality Brand, commonly purchased in surgical supply stores where they are professionally fitted. To fit them yourself we have provided detailed instructions. Please see sizing instructions in the Images section.