Neoprene reusable mask with carbon filter (ear straps)

The mask is neoprene, reusable - lasts up to 8 hours, replaceable filter.

There is a pocket in the mask, from the inside into which a carbon filter is inserted. The coal filter is used according to the norms of 8 hours! Additional filters can be purchased separately.
The mask with straps is attached to the back of the head and neck.
1.5 mm neoprene is used.
One filter included!