The "BUFF® CoolNetUV + Filter Tube" is designed in such a way that it achieves a filter effect in the mouth and nose area, similar to a classic hygiene mask.Active cooling technology and virus protection thanks to Swiss technologyThe fabric is a 95% recycled high-performance polyester microfiber with an active cooling technology "HeiQ Smart Temp" from the Swiss company HeiQ Materials AG, which dries the wearercan stay and at the same time offers active cooling. The fabric also protects against the sun with a UPF 50+ sunscreen. The innovative 4-way ultra-stretch technology ensures a perfect fit. The «BUFF® CoolNetUV + Filter Tube» is available in two sizes: XS / S and M / L.The "HeiQ ViroBlock®" technology is an intelligent Swiss textile technology that is added to the fabric in the last phase of the textile manufacturing process and provides additional virus protection.The filters are not reusable and can last up to a day. The certified filters used meet the performance requirements for the efficiency and breathability of bacterial filtration according to the standard for surgical masks (EN14683: 2019 Type I and II). These filters are developed by Ahlstrom-Munksjö and manufactured in Germany. The Swiss “HeiQ ViroBlock®” technology, an antimicrobial treatment of the inside pocket of the filter, also protects the product against microbes and germs. The antimicrobial treatment takes up to 30 machine-friendly washes at 60 ° Celsius. Recommended gentle cycle and less than 30 minutes washing time. PACKAGING BUFF® Filter Tube contains 5 replacement filters and care instructions. Made in Spain.