Dust-proof breathable valve washing mask $ 6.79 Material: cotton cloth Color classification: A black + send 2 filters, B dark blue + send 2 filters, C black with breathing valve + send 2 filters, D dark blue with breathing valve + send 2 filters, E PM2.5 filter x10 Film, F dark blue does not send filters, G black does not send filtersH full black belt breathing valve + send 2 filter
