5 Pack of five layer activated carbon filter pack for reusable sports cycling face masks and other dual valve masks.

2-3 day USPS First-Class shipping from USA - Same day handling.

Buy 2 or more to save 10-20% on your order!

Key Features

particulate filtration efficiency for PM2.5 to 0.3 micron size particles such as dust, pollen, and smoke. Smaller particles filtered at higher efficiency through diffusion.

Filter layers: Waterproof nonwoven polypropylene, anti-odor activated carbon, cotton prefilter, electrostatic submicron particulate filter, waterproof nonwoven polypropylene.

Perfect for outdoor sports and activities such as cycling, motorsports, running, skiing, paintball, commuting, and lawn mowing.

Each filter lasts 3-30 days depending on pollution level.

100% Satisfaction Guarantee - If you are not 100% satisfied with your purchase, contact us to return it within 14 days for a full refund.

Filter Replacement Instructions

Replace filters after 3-30 days of use depending on pollution level or when the inner layer turns grey.

Rotate exhaust valves counterclockwise to unlock. Remove the valves and filter. Filters can be recycle as polypropylene plastic.

If washing the mask, soak it in warm water and detergent. Rinse and air dry.

Insert outer valve pieces into the mask and stretch new filters over the valves. Rotate inner valve pieces clockwise to lock.