- 2 layers of non-woven fabric + middle layer of melt-blown* fabric
- Elastic ear-loop, soft and comfortable to wear
- Blocking dust, air pollution and droplet
- One size fits most people
- One box contains 50 pcs
- For personal use only
* Melt-blow is a special technique for manufacturing non-wovens with very fine fibers, down to 0.5 μm. The fibers are elongated by blowing hot air at high speed concentrically along the fibers resulting in a fabric with ultra fine filtration qualities.