Multi-layer 3D filter for the TOUR MASK high-performance mask with valve equipped with high performance filters.
Sold as a set of 3 high performance filters that can be replaced with PM2.5 and pollen protection.
High capture efficiency of an average of 99% in the "Particulate Collection Efficiency (PFE) test that supplies particles at a low speed of 0.1 microns, and calculated by evenly dispersed drops.
Pollen particle capture efficiency is about 99%.
"Efficiency Test of Pollen Particles (Filtration) Efficiency Test" which is calculated by dropping particles at a constant speed of 30.40 microns.
Filter replacement estimate... If using 2 hours a day, we recommend replacing it in about 1 week.
Because particles such as pollen are collected are adhered to the product, we recommend replacing them from the above period of hygiene.
The color of the product may look different from the actual product depending on your display settings.
Product specifications, logo design, etc. may be subject to change for product improvement.
We also cannot answer measurements or personal fit that the manufacturer does not announce.
Thank you for your understanding.