Wait three weeks and finally get those grades so kids can go to school. But I'm so disappointed. They said it was a single pack. Wondering if you understand what a separate package means? You pack a style in a bag. Not one pack at a time. This mask is so thin. Thinner than a 3-ply mask. How can you tell it's 4-layer filtering? Come on salesman, stop lying to the man. These masks are for children. For our safety. Please do not buy from this seller. They don't even qualify for a launch