Colour Name:30pcs Filter Feature:Effective filtration technology: Made of activated carbon and non-woven meltblown filter cloth, 5-layer filtration system effectively prevents PM 2.5 and a series of airborne pollutants.5-layer protection: 5-layer protective material filter can effectively prevent air pollution protection. With a special design, the filtering effect is durable, and it is usually recommended to replace the filter once a week.Reasonable size: The filter size is about 12 * 8cm, which is compatible with most dust masks and easy to insert or replace the original dust mask.Good design: Multiple protections against dust, multiple layers of folding, good ventilation, and inserting an additional filter inside the pollution mask, double protection against harmful substances, gases and odors.Application: Used in combination with masks to protect against dust, vehicle exhaust, PM2.5 and smog. It is suitable for cycling, running, cycling, hiking, skiing and other outdoor activities.Description:Material: Non-wovenSize: about 12 * 8cmTips:How to replace the filter:1. Open the mask to expose the inside of the filter valve.2. According to the opening direction on the valve, turn the valve counter to separate the valve.3. Remove the filter.4. Replace the new filter, repeat the above steps, and rotate the valve again.Package included:30 * PM2.5 5-Layered Activated Carbon FilterNote:Due to the different monitor and light effect,the actual color maybe a slight different from the picture color.Please allow 1-2cm differs due to manual measurement.
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