Filter with 4 layers of protection against exhaust fumes, dust, smoke, steam, air pollution, etc., with 4 coatings.

Compatible with most sports and cycling masks that have a double valve.

There are two circular cutouts for the valve reception. If the mask valve requires a larger diameter, you can cut it as needed with scissors.

• Constructed with five layers of non-woven fabric and activated carbon.
• The 4-layer filtering system effectively prevents the entry of PM2.5 and other airborne pollutants.
• Filters at least 95% of particles larger than 0.3 micrometers.
• Effective activated carbon isolates up to 99% of dust.
• Suitable for protection against dust, haze, allergies, smoke, pollution, ash, pollen, and hazardous chemicals.
• Universal replacement for all face masks with a filter slot.
• It is recommended to replace filters 1-2 times a week for better health.
• Suitable for outdoor activities such as running, cycling, hiking, skiing, etc.
• Can also be used for protection against haze and dust.

Packaging: Bag / Cellophane