| ◆ | Five-layer structure: Non-woven fabric, electrostatic cotton, melt-blown fabric, shaping cotton |
| ◆ | 3D cup shape: Specifically designed and developed for the facial features of Chinese people, providing a snug and comfortable fit |
| ◆ | Aluminum nose bridge strip and built-in sponge nose pad: Good shaping effect, comfortable to wear and reduces leakage |
| ◆ | Exhalation valve: Discharges heat and moisture, enhancing the wearing comfort |
