1. Efficient barrier smooth respirator fresh, three-dimensional, breathable and comfortable
2. High efficiency filtration, large three-dimensional space, higher density
3 fortable and adjustable 3D fitting design of bridge of nose: effectively block air pollution on both sides of bridge of nose.
3 layers of protection: non-woven outer layer + filter paper layer + skin friendly non-woven inner layer. Breathable and comfortable, low breathing resistance.