Mifidy PM2.5 Activated Carbon Filter,Insert 5 Layers Replaceable Anti Haze Filters for Mouth (100 PCS)

Key Features: Five layers of PM2.5 Filter, Made of activated carbon and non-woven melt-blown filter cloth,effectively.keep away from PM2.5 and a range of airborne contaminants. Carbon filters size measures approx. 12 x 8 cm/ 4.7 x 3.1 inches, compatible with most dust pm2.5 Filter, easy to insert or replace the original one. Please note: PM 2.5 Replacement Filters, disposable supplies cannot be washed.Recommend replacement according the use time, if possible 1~2 times a day. When film or sticky sediment stains emerge, please replace the filter. If any question, leave us a message, we will keep in touch with you. These flter replacements can be used well with scarves,neck gaiters and bandanas etc., ideal for outdoor activities, sports,cycling, biking, travelling and polluted environment.