The mask filter adopts a W filter.
6-layer construction protects against dust, pollen, bugs, exhaust and more
The filter is divided into two pieces and consists of two and four layers of filters.
Filter 1 is made of plastic cotton and nylex sponge.
Filter 2 consists of non-woven fabric → spunlace filter → carbon filter → non-woven fabric
Sizes are unisex
Hand wash and reusable.