Face Mask Activated Carbon PM 2.5 Filter Reusable Filter with Exhaust Valve, 501 Original

Face Mask Activated Carbon Non-woven Fabric PM 2.5 Filter Reusable Dustproof Filter with Exhaust Valves for Mouth Breathing MaskFeatures:1. Filter exhaust gas, anti pollen allergy, PM2.5, fitness, motorcycle riding, dustproof, equipped with valve, activated carbon, N99 filter.2. Replaceable activated carbon filter can isolate 99% of dust, pollen, hazardous chemicals, smoke, heavy metal particles, etc.3. Compatible with majority of dust masks available in the market.Specifications:Material: non-woven fabric, activated carbon fabricColour: BlackSize: 150 * 100mm/5.91*3.94\\\"Weight: 3gNotes:1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!2. Please allow 1-3cm measuring deviation due to manual measurement.Package Content:1 X Activated Carbon Filter