Original4u Non-medical Respiratory Mask Filters Replacement For Masks with pocket filter and Cycling Sport Mask - Activated Carbon 5-Layer Filter PM2.5 - Multi Pack - U.S. Seller

Please pay attention to the photo when choosing and ordering the filter model.
pm 2.5 filter photo is different with sports mask filter photo.
5 layers filter system effectively keep away from PM2.5 and a range of airborne contaminants, compatible with most dust cover, easy to insert or replace the original one.
*Usage
Mouth cover filter anti airborne particles dust, seasonal allergies, pollution, ash, gardening pollen and so on, suitable for most occasions.
*HOW TO USE
Step1:After washing your hands ,take out the product;
Step2:place the PM2.5 carbon filter pad in the mouth cover to prevent slipping; Step3:Install thePM2.5 carbon filter, fit your face and wear it correctly.
*Remark
1. When film or sticky sediment stains emerge, please replace the filter.
2.Filter insert can not be cleaned and should be replaced everyday for getting best protection.