Totsafe PM2.5 high-quality replaceable filters are designed to work with any lifestyle cloth mask that has a filter pocket. Slide one inside your mask every time you step outside. 

Our PM2.5 filters are engineered with advanced materials. They have strong filtering capability with 5 layers of melt-blown fabric and carbon filter technology to protect from airborne contaminants and pollution, purifying every breath as sterile as possible. They come in a resealable zipper bag that is easy to take along. Each filter is also individually packed to ensure they are 100% sterile. Take a pack as you need or stash a few of them in your bag. They can come quite handy for when you need to change masks on a full day outside. 

Usage Instruction: Dispose after a day's use. This is NOT reusable.