The BUFF® Filter Mask and BUFF® Filter Tube are designed for comfort and light weight and are certified according to CWA 17553:2020 and UNE 0065:2020. On the other hand, the certified filter meets the European standards for surgical masks EN14683:2019, provides 99% bacterial filtration efficiency and is very easy to breathe with the mask on. The elastic bands allow it to adapt perfectly to the shape of your head without exerting any pressure on the ear area. The BUFF® Filter Tube provides warmth and comfort. Thanks to its ergonomic design, it adapts perfectly to the shape of our face.