Wearing reusable masks with re-insertable filters are better than surgical or ... ineffective for fine particulate matter like PM2.5. They do not fit tightly, so pollutants can enter through ...

High-quality masks, such as N95 and FFP2 masks, are designed to filter out up to 95% of PM2.5 particles, making them highly effective in polluted environments. Masks with activated carbon layers ...

Each mask also has a filter pocket and ships with one disposable PM2.5 carbon filter. Additional filters are sold separately. Reviewers say these masks work well for themselves and their children.