The 4-stage protective face mask is anti-allergic. It has one layer of protection more than the usual surgical (3-layer) mask.The size is universal. It has an elastic with which you can place the mask on your face and stick it behind your ears.
They are also suitable as protection against viruses and influenza.
The masks are constructed of four layers of filters that successfully absorb glue vapors and dust in the space generated during work.
Daily direct inhalation of adhesive vapors can lead to headaches and other health problems.