protect your face from cold winter,preventinfluenza effectively,good choice for promotion,and do great help to our health. influenza mask,face mask ,dust mask,influenza mask1.material: cotton2.size:13.5*15.5cm3.color: white4.thickness: 4 ply5.weight: 11.4g6.packing: opp bag,our clients' design is welcome.7.carton size:55*40*50cm 1500pcs/ctn dust mask