Protection material: Made of high quality silver ion protector material, this 3 -layer mask prevents dust, pollen, aerosols and other fine particles in the air. Very soft and comfortable, easy to breathe, friendly with your skin. Single design: This 3D protective mask has a broader facial coverage to comfortably adapt to the mouth and nose area, while leaving space to breathe. Soft earmuffs can easily stretch to adapt to most faces sizes. Washable