3D face mask with earloop, ear-loop is spandex ... is spandex fabric)Special 3D design, make mask more joint face and big space for breath. Characteristic:1) size ... blue, yellow etc. 6) advantage: Filter pollen, dust and bacteria, Very low resistance to breathing, Soft, Comfortable, Odorless, ... to human skin. Good filtration efficiency, pollen, dust and bacteria filtration efficiency over 95%7) used for ...