NIUNIU Feature: 1 Made of High-quality Polyester Cotton with the Characteristics of Soft and Comfortable, Has a Long Life. 2 the Bottom of Socks Has Tourmaline Design Which Can Self-heating to Warm and Your Feet in Cold Weather. 3 Tourmaline Socks Relieve Leg Fatigue, Pain, Regulate the Nervous System, Self-heating, Remove Moisture and Stop Odor Remove Swelling of the Legs and Feet Peeling of the Skin, Produce a Static Foot Massage, Regulate Blood Flow. 4 the Perfect Tool for Legs with Varicose Veins, As Well As in Renal Failure. 5 Good Therapy for the Ankles and Feet when Frostbite. 6 to Stimulate Acupuncture Points. Daily Use Any Time of Day. Wash Under Running Warm Water Without Detergents. 7 Great for Outdoor Activities: Skiing, Snowboarding, Hiking, , and Other Sports. Specifications: Product Name: Heated Socks for Men Women Material:polyester Cotton, Silica Gel Color:white,red,black Effect:anti-fatigue, Keep Warm, Cold Resistance Massage Socks:health Care Socks, Non Slip Skid SocksSize: One Size