Vogmask is offered in valved and non-valved respirators.
Exhalation valve facilitates the exit of moisture and CO2 from the interior of the mask. It does not impact inward filtration to the wearer. However note that the exhale of the mask wearer exits partially through the valve unfiltered. Valved masks are suitable for biking, hiking, hazardous air quality, mold, dust, and environments for protection of the mask wearer not interacting with the public in proximity.
We encourage responsible use of valved masks. Every valved vogmask purchased from Vogmask.sg is shipped with free OEM 3D printed valve cover so that the wearer has flexibility & responsible use for all occasions.
Valved Vogmasks also include carbon filter layer which helps with odors and absorbing moisture.