11 plastic bag. * Made of 5 layer material, the outermost layer of non-woven fabric can filter large particles, the middle two layers of meltblown fabric can block more 95% of the particles, the first layer of hot air cotton can filter out some fine particles again, and the first layer of non-woven fabric is skin-friendly And softer, you can use a comfortable experience, and protect your breathing through high filter efficiency. * High level breathing protection, filter efficiency, breathable mesh composite fabric, suitable for all seasons * 3D earrings and lightweight design make breathing easier. High quality elastic earbands make it comfortable to wear for a long time.The Manufacturer is Dongguan Sengtor Plastics Products CO.,LTD.If you have any other questions,please contact with us, we will provide you the best service. * High density non-woven fabric and highly breathable non-woven fabric.Keep your nose ,mouth and chin covered and protected when you go to crowded public places.Which can be applied in home, office, school, park, playground, indoors, outdoors and more congested and busy public places.