Cozy face layer for KIDS! We didn't invent this type of face mask. But when we decided to make a single layer acrylic mask, we did something different. Everything we'd ever worn up until that point was a double-layer face sweater that would have a Florida man's face sweating in Antarctica. And soak up twice its weight in kid spit. Two layers is too much. Single layer? Just right! Pterodactyl on there!? Even better.