Sell Multi Protection Cycling Outdoor Cold Proof Active Carbon Filters Dust Proof PM2.5 Filters best price

Decription: Features: 1. Anti-allergy environmental material, no odor, baby and pregnancy available. 2. With four/ five layers, it can effectively filter most particulates. 3. Replaceable lining of activated carbon mask, suitable for a variety of double valve masks, protection upgrade. 4. Double breathing valve increases the amount of air discharged, significantly reducing respiratory resistance. 5. Easy to replace and operate. Specification: Type: Mouth Mask Filter Material: Fabric Color: As the picture shown Style: 4 layers/ 5 layers Size: Approx. 135*95mm Note: 1. It is recommended to replace the filter within 15~30 days. 2. It suitable for a variety of double valve masks. Included: 1pcs*Mouth Mask Filter