Paper face mask Features: 1) Prevent contamination from coughing or breathing 2) Disposable, single-use, non-sterilized 3) 1 / 2-ply pleated paper with elastic loops for securing 4) Economical Packing:100pcs/inner box, 10,000pcs/case 100pcs/polybag/inner box, 5,000pcs/case