our masks https://vinceglobal.com are premium branded Dr. Wayne is a Europe's CE Certified. 5 layers, KN95 mask made with Nano-filtration microfiber media, Very thin and Easy to breath. Bacterial Filtration Efficiency is 99.9% and 0.3-0.5?m particle interception rate is 99%. Sterile packed 2 masks per pouch with bar code. 10 such packets in a 20 PCS box with different bar code 800 Masks in one case 12,800 masks in one Pallet.