Bacterial filtration efficiency: ≥ 99%

Specifications: 3-layer mask:

- First layer: waterproof non-woven fabric (new non-woven fabric): effectively inhibits and isolates harmful particles and gases

- Second layer: high density filter layer (blown non-woven fabric)

- Third layer: layer in direct contact with the skin, in new non-woven fabric, resistant to humidity, allowing easy breathing, non-toxic, non-stimulating, soft and respectful of the skin