Size:one size for men and women Material:Cotton and tourmaline point Name: Tourmaline self-heating socks Feature: self-heating Package include:1 Pair socks Note:Best wash before wearing; Dark socks might be a little fade. Product information Tourmaline crystals are present in the composition of socks. Thanks to them, the socks have a unique piezoelectric properties and a positive thermal effects on the human body. They improve microcirculation, used to activate the so-called pro gram "Light life", acting in the same range of infrared with the human body. Also part of the socks 100% cotton. Using socks improves joint mobility, increases the elasticity of the ligaments, relieves muscle tension. Increases endurance, relieves stress, improves skin and hair, improves sleep has a restorative effect on the body. Functions Tourmaline socks relieve leg fatigue, pain, regulate the nervous system, keep the heat, remove moisture and stop odor remove swelling of the legs and feet peeling of the skin (vitamin deficiency), produce a static foot Massage, regulate blood flow. The perfect tool for legs with varicose veins, as well as in renal failure. Good therapy for the ankles and feet when frostbite. To stimulate acupuncture points. HOW TO USE: Daily use any time of day. Wash under running warm water without detergents. Better wash it before use!