It's not cool to be the one to get others sick. Super popular in Asia, everyday people wear masks outside doing day to day activities for various reasons. To prevent getting sick from other people and to prevent others getting sick are the two main reasons. Now you can be health conscious while rocking a fresh look. Hate the smog in your city? Wear a mask. Going snowboarding and need a face protector? Wear a mask. Going to a music festival to listen to some unce unce music? Wear a mask.