acrylic 95%, spandex 5%. characterized by germ resistance, breathability and comfortable wearing, which integrates healthcare, functionality, decoration and practicability as a whole. After wearing, it can improve microcirculation, increase the volume of blood flow, relieve and dispel aching pain as well prevent and cure foot numbness, foot sweat, foot breach, foot odor, frostbite etc. we have many other colors and types.