mascherine 5 layer pm 2.5 dustproof core cycle face neckerchief replacement mask only qa

please be kindly noted,the listed product is produced and distributed abroad and subject to the laws of its country of origin. mascherine mask 5 layer pm 2.5 dustproof mask core replacement mask only cycling masks features: top steel wire, adjust to fit your nose better. comfortable and breathable to wear. perfect for daily use,outdoor life,cycling,running etc.