for pm2.5 dhl anti-fog sponge anti-dust breathing cycling mtb 3.0 snowboard face mask l4h8

sponge breathing famask pm2.5 anti-dust anti-fog for cycling mtb 3.0 y valve q.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.