1. Memory foam soft nose pad, breathable and airtight, ergonomically designed, with good wrapping and providing a large breathing space for the mouth and nose
2. Large-diameter cold flow breathing valve, moisture-draining and breathable without suffocation, closes during inhalation and opens during exhalation
3. The ear strap part is equipped with adjustable buckles, allowing for free adjustment of length. The adjustable buckles can be freely adjusted without causing ear constriction
4. For formaldehyde removal, carbon is the key. Double-layer activated carbon, choose activated carbon with good adsorption capacity without fear of cost
