#kn95

christophs@diaspora.glasswings.com

Eric Feigl-Ding auf Twitter: "TIGHTEN THE FIT of masks. Sloppy masks leak a lot—especially backwards & to the sides. This is why we need to either double mask, tighten the straps, or wear tighter fitting masks with good nose bridge seal. #COVID19 #MaskUp https://t.co/EeFfhh80Vt" / Twitter

there's a reason I still wear my #KN95 or #FFP2 masks

https://twitter.com/DrEricDing/status/1425509411267690500