A real mask made by actively reflecting the opinions of parents for children The thick ear band reduces children's rejection of the mask, and the pattern is made with eco-friendly ink that is harmless to the human body, making it safer. Made in Korea with peace of mind, hygienic individual packaging makes it healthier. Easy breathing is a basic condition, right? (You may see some blemishes on the mask, but rest assured that it is an eco-friendly ink ingredient that is generated during the printing process) XS size is recommended for 1-3 years old and S size is 4-7 years old, but please note that the actual fit may vary depending on the growth of the child.