Size:1Pcs  |  Color:Blue Product Description： Arrive time：8-20 days Filter item helps decrease the transmission of flu. Keep your friends, family members and others from contracting your cold The product is Breathable fabric . Air permeability, Hypoallergenic.They are able to block dust and it will not cause tension or anaphylactic reaction for long-term wearing. Smooth cloth is adopted to reduce the falloff of fabrics, which is maintenance-free, convenient, practical, safer and more healthful. Please note: When wearing it, do not excessively pull the strings at both sides or they will break. Package Content: 1 x Dustproof Mouth 2 x PM2.5 Replacement Sheet
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