Shielding function, attack function, deodorizing function An ideal three-layer structure. (1) Outer filter (shielding function) Developed by Polygiene of Sweden, it reduces specific viruses on fibers (*1) Polygiene Viraloff®*2 processing technology is adopted. (2) Middle filter (attack function) Uses a special fabric that generates "negative ions". It emits negative ions that attack odors and harmful substances floating in space. (3) Inner filter (deodorizing function) Uses deodorant stretch fiber ROICA®CF*3. The smooth bare mesh fabric is gentle on the skin and creates an ionized state on the surface of the thread, It adsorbs unpleasant odors (ammonia, acetic acid, isovaleric acid) and suppresses them firmly. *1 Test method: ISO18184:2019 *2 It is a registered trademark of Polygiene *3 It is a registered trademark of Asahi Kasei Corporation's Premium Stretch Fiber PFE, BFE, VFE, and pollen 99% cut* * Depends on filter performance It can be reused as a deodorant, and can be used as a deodorant for chests of drawers and as a deodorant for shoes. It is a new idea "a mask that will not be thrown away". A flat, soft, high-stretch string is used for the ear strings. The length can be adjusted with an adjuster, so it is less likely to hurt your ears.