Reusable, antibacterial and water repellent, approved in accordance with the UNA0065: 2020 standard, certified by ITEL (Cleaning Spanish Technical Institute). Filtration efficiency> 93 %: breathable> 46 pa/cm²: the two values ​​are much higher than those required by the regulations: very fine and light mask, 100 % safe that it is fresh and comfortable to use. washable at 60 ° C, in machine with neutral soap, and retains its intact filtration properties of up to even 20 washes.