High-quality materials: Five layers of support that contains non-woven fabric, activated carbon and melt-blown filter. Five layer filter system effectively keeps away from PM 2.5 and a range of airborne contaminants.
Size Measurement: Carbon filters size measures approx. 4.50 x 3 1/4 inches, compatible with most face masks.
Easy to use: Easy to insert or replace. Just place it in the insert opening or if no insert is available simply place inside your face mask.
1. Filter cannot be cleaned and should be replaced every week
2. When film or sticky sediment stains emerge, please replace the filter
Activated Carbon Filters: 100% brand new and high quality. It's compatible with majority of mouth cover available on the market