This double three dimensional mask is made in Japan and uses a highly functional material made in Japan that bacterial effect. Can be used repeatedly up to 50 times. 1 day is about 18 yen for adults. 7 sheet can be used about 350 times. (Assuming that the product has been used 1 times a day for approximately 1 year) 1 By using a filter or kitchen paper in the pocket, it is possible to reduce the gap between the mask and the skin if the size does not match. The inside of the double-layered 3 d mask can also be used as a pocket, and can be used with a filter to cut viruses, kitchen paper, etc. Uses Japanese-made fungistatic material that has received the SEK Orange Mark. ・ Features of the material This Japanese-made antibacterial material has received the SEK Orange Mark. It also has the function of moisture absorbing and quick drying by the capillary effect. It is used not only in medical treatment and nursing care field but also in various fields. ・ What is SEK authentication? The "SEK" fungistatic mark is a mark made with the key words "S", "E", "K", and "Comfort", and is aimed at responding to consumers' requests that textile products be always clean and hygienic. The Textile Evaluation Technology Council has established evaluation standards and a certification system for labels fungistatic processing, as well as a certification system for labels attached to successful products. The evaluation methods are applied to different kinds of fungi, and the standard level of the fungistatic processing is set higher. ・ What is bacteriostatic? Antibacterial agents inhibit the growth of bacteria on the surface and inhibit the growth of microorganisms by stopping or reducing their activity. It suppresses the antibacterial but the bacteria increase little by little. On the other hand, the activity of activity, so bacteria decrease.