-Function:Dust proof, avian influenza, virus, haze, dust, pollen, particulate matter, PM2.5, bacteria, etc.
-With bamboo charcoal technology ,much higher quality than other normal mask !
-Please kindly note the Masks are disposable product. so it does not support return if there is no problem.please confirm before order.Thanks!
-Dear friend, the item without retail box,if you want please contact us, thanks!