20 Activated Carbon Filters, dust Droplets, and Pollen can Effectively Filter More Than 95% of Harmful substances, Suitable for Most Bicycle Masks.

Description

1- Sufficient quantity, 20 pieces of HM activated carbon filters are included, it is usually recommended to replace the filters once a week, this quantity is enough for your long-term use2- Reasonable size, filter size is compatible with most dust masks, easy to insert or replace original dust masks.3-Wide application, mask filter can prevent airborne particles, dust, seasonal allergies, smoke, pollution, ash, garden pollen, etc4- It is suitable for cycling, running, cycling, hiking, skiing and other outdoor activities.package:30 * filterHM activated carbon filter replacement steps:1. Open the mask to expose the inside of the filter valve.2. Rotate the valve counter according to the "open" direction on the valve to separate the valve.3. Remove the filter.4. Replace the new filter, repeat the above steps, and rotate the valve again.