Protect yourself, your family, and your customers during this difficult time with the 5-Layer Protective Face Mask. It is FDA Registered (Certification of Registration issued by FDA), and with 5 filtration layers, it will keep out harmful bacteria. The 5-Layer protective face mask is lightweight and comfortable, and its flexibility helps create a secure seal for the best possible protection. 10pcs mask packed into one self-sealed polybag, 500pcs/MC, MC size: 50*28*33cm/500pcs, 3.5kg/MC Lead Time: 10 Days