dhl shipin stock breathing valve sponge anti-dust masks pm2.5 pollution half mouth washable winter face mask reusable muffle csod

in stock breathing valve sponge anti-dust masks pm2.5 pollution half famouth mask washable reusable muffle t.features: material: sponge skin-friendly material makes it feel comfortable when you wear it. double filter: 2 layers thick preventing dust perfectly. its extensible and stronger is not easy to be damaged. widen elastic ear-loop: with stretchy widen ear-band for closely fit, easy to wear and off.