dhl shippm2.5 masks full breathing valve sponge black dustproof face mask washable reusable anti-dust fog boom2017 i3yx

pm2.5 masks famask breathing valve sponge mask black dustproof famask washable reusable anti-dust fog boom2017 3.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.