facemasks sponge anti-dust masks facemouth er pm2.5 human face protect mask breathable dustproof m1a6

famasks sponge anti-dust anti-dust masks famouth er pm2.5 protect mask breathable dustproof.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.