Activated Carbon Filters Replacements Parts Set of 20 Fit for Most Cycling Masks Filters with 8 Exhaust Valves Replacement Dust

Description

Set of 20 Activated Carbon Filter with 8 Exhaust Valves Replacement Unisex 5 Layers Protective Filters for Dust Running, Cycling, Outdoor Activities How to use: 1. Open the mask to expose the internal valve filter. 2. According to the opening instructions on the valve, turn the valve counterclockwise to separate the air valve. 3. Remove the two valves and remove the filter. 4. Replace the new filter, rotate the valve clockwise, and the replacement is complete. Package included:20*Activated Carbon Filter，8*Exhaust Valves If you have any question or problem about your face Filter, please feel free to contact us, we'll reply you within 24 hours, and offer you the best solution.