Remember, no mask is 100% effective at protecting from viral transmission. The most effective thing you can do to stay healthy is wash your hands and practice appropriate social distancing.
PM2.5 filters are made from the same advanced materials used for respirators like the N95 and KN95, in addition to activated carbon fabric.
- Outside layers of spunbond fabric - non-woven fabric that filters out large particles while providing structure and holding the fine non-woven layers together
- Meltblown Fabric - This advanced material has electrostatic properties that help it capture microscopic particulates as they attempt to pass through. Two layers per filter.
- Activated Carbon - This material traps particulates via a process called adsorption, and also serves as an antibacterial. One layer in every filter.
Disposable PM2.5 filters are flat, so they take up less space than standard respirators. They retain effectiveness for years, and you can use them continuously for 16-24 hours (around 1 - 2 weeks of occasional use), or whenever it becomes harder to draw a breath.