Size: 14 x 12 cm Layer: 6 as follows: 1st layer: PP nonwoven fabric 2nd layer: ES hot air cotton fabric 3rd layer: Melt-blown fabric 4th layer: Nano PTFE coating layer fabric 5th layer: PP Nonwoven fabric 6th layer: SMS fabric Earloop: 5mm diameter, made by cotton and spandex Nose bar: 4 -5 mm diameter inside the mask, made by polyester with inner iron-zinc core.
