omfortable Material-The dust mask is made of activated carbon non woven fabric, comfortable to wear for protecting the face. With good windproof and dustproof effect.
Breathable Ventilation Design - Mouth have ventilation holes, double air valve help you breath easier and freely when riding the bike.
Excellent Filtration - Military design filters provides excellent filtration. Built by comfortable and breathable 5 layers filter cotton, it can isolate 95-percent of dust, chemicals, exhaust, smog, pollen, PM 2.5,droplets and particulates.