GRADE COMPRESSION : These 15-20 mmHg Zipper Compression Socks Offers True Graduated Compression To Provide Therapeutic Pressure As It Helps To Decrease In Leg Fatigue, Aching Feet, And Swollen Ankles. MEDICAL FUNCTIAON??Relief From Moderate To Severe Varicose Veins And Swelling, Edema, Lymphedema, Venous Insufficiency, Superficial Thrombophlebitis. Helps Reduce Muscle Soreness and Fast Recovery From Tired Legs. ADJUSTABLE SIZE: With a Strong High Quality Built In Zipper To Secure A Snug Fit. Stays In Place As It Prevents From Unzipping Even During Movement Throughout The Day. SUITA FOR MEN AND WOMEN? This compression socks Fit for Running, Nurses, Shin Splints, Flight Travel, & Maternity Pregnancy. Boost Stamina, Circulation, & Recovery.The Pressure Gradient From These Sleeves Helps Boost Blood Circulation During Those Times When Your Standing Or Sitting On An Extended Amount Of Time. MATERIAL:Made With High Quality Fabric To Provide Strong Durable Use. Will helps Promotes Air Circulation To Improve Performance.And we will provive 100% money back guarantee, Do not hesitate to buy it.