It's a product made in Korea.
It's lighter than one sheet of A4, so it's easy to breathe.
This mask, which is made with a nano-fiber filter rather than an MB filter, sprays disinfectant alcohol, dries well, and maintains the filter function at least 94% even if it is reused.
It is a mask that can be reused more than 10 times, which is economical and above all, prevents even the smallest penetration of fine dust.
A lot of people used it and left a good rating.I can trust you.

The date shown on the back of the mask is the manufacturing date.It's not expiration date.This mask is a genuine product certified in Europe and the United States.The expiration date of the mask is usually 3 years from the date of manufacture.However, this mask is well sealed in individual packaging, so you can use it longer if you don't pop the wrapper.