It has been officially approved by the Ministry of Food and Drug Safety with 100% KF 94 masks produced domestically. Relaxed wear is available in 3D structure. The inner space is wider and more relaxed than the normal mask size, so both men and women can wear it comfortably even on large faces. It's got a two-stage lt in, and there's a 10mm hidden space inside. This product allows comfortable and comfortable breathing without touching the mask. High elastic earbands have been used to relieve ear pain. We used reliable subsidiary materials. The blocking power was increased by adding a high-quality meltblown filter that passed the BFE acceptance criteria. KF94 quasi-drug approval by the Ministry of Food and Drug Safety 100% domestic manufacturing Reliable subsidiary material, high-density quadruple structure Comfortable fit of 3D three-dimensional structure MB filter bacterial filtration efficiency (BFE) pass standard 99.9% [License & MFDS Co No. : 20209420 FDA No. / / Regulation No.: 878.4040