The Bella Premium Hanji Mask consists of 4-layers with high-efficiency fabric protection including breathable pH Neutral Mulberry Pulp (Hanji) layer. Our masks are lightweight, comfortable, and easy to breathe in for practicing healthy habits every day. With a top metal strip, this mask offers a secure fit that provides soft comfort and protection. With an anti-fog nose strip for clearer visibility, the Bella Premium Hanji Mask allows smooth breathability without moisture build-up. The Hanji Layer is made from the inner bark of mulberry trees (Dak), which is soft yet durable. Beware of Imitations. Our Bella Premium Mask is safely and proudly made in South Korea. The mask consists of natural plant fiber using Mulberry-Bark pulp that doesn?t contain any chemicals that have been linked to adverse health effects. *Hanji is Korean handmade paper (PH neutral) made from the inner bark of mulberry trees known in Korea as ?Dak?. This kind of natural fabrics helps reduce unpleasant odors, discoloration, staining, and deterioration. Since the pH of Hanji is alkaline or neutral, it is a suitable material for protecting against dust, smoke, pollen, and other irritants. This mask has been lab tested for PFE ? 97.12% 0.1 microns. Provides significantly more protection compared to fabric-only masks, yet is still incredibly easy to breathe through. Full reports available upon request. *This mask is not a replacement for medical-grade personal protective equipment and not recommended to use in a clinical setting.