Size Measurement: Carbon filters size :4.72 x 3.15 inches, compatible with most dust, easy to insert or replace the original one | High-quality materials: Made of activated carbon and non-woven melt-blown filter cloth, 5 layers filter system effectively keep away froma range of airborne contaminants | Safety protection: Ideal to protect your mouth and face from Dust, Haze,Allergies,Pollution, Ash, Pollen, Gardening, Crafts, Vehicle Exhaust, Woodwork, Pollen Allergies, and Fumes | Easy to use: just put it in the filter opening. 1. Filter insert can not be cleaned and should be replaced every day. 2. When film or sticky sediment stains emerge, please replace the filter | Activated Carbon PM2.5 Filters: 100% brand new and high quality. It's compatible with majority of mouth cover available in the market.

Pack contains 50 replacement filters only for use with your Mesh/Neoprene Mask | Active carbon filter isolate 99-percent of non-toxic dust, pollen, fumes, common airborne irritants and other non oil based particles. | Dust mask replacement filter material: Non-woven, Active Charcoal cloth. | 50 replacement filters only, not include mask | We recommend replacing at least one Active Carbon Filters a day, health and safety are guaranteed.

More Space for Breathing - It holds up the mask fabric around the mouth to create more breathing space when a mas-k is put on face. | Much Cleaner for Mas-k Wearing - The bracket reduces the friction frequency between mas-k and face to protect the lining from getting stained. | Ideal Saver for Makeup - It mak-es the mask not to stick lipstick, protecting your perfect mak-e up from being messed up. | Safe & Reusable - Food grade silicone material is safe, washable and reusable. | Remind - Using double sided tape or thread to fasten the silicone frame onto the mas-k can mak-e it work better.

More Space for Breathing - It holds up the mask fabric around the mouth to create more breathing space when a mas-k is put on face. | Much Cleaner for Mas-k Wearing - The bracket reduces the friction frequency between mas-k and face to protect the lining from getting stained. | Ideal Saver for Makeup - It mak-es the mas-k not to stick lipstick, protecting your perfect mak-e up from being messed up. | Safe & Reusable - Food grade silicone material is safe, washable and reusable. | Remind - Using double sided tape or thread to fasten the silicone frame onto the mas-k can mak-e it work better.