The Buff CoolNetUV+ Filter Tube is designed to provide a filtering effect in the mouth and nose area, similar to a classic hygiene mask. It features active cooling technology and virus protection thanks to Swiss technology. The fabric is made of 95% recycled high-performance polyester microfiber with HeiQ Smart Temp active cooling technology from the Swiss company HeiQ Materials AG, which keeps the wearer dry while providing active cooling. The fabric also offers sun protection with a UPF 50+ rating. An optimal fit is ensured by the innovative 4-Way Ultra-Stretch technology. 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 added to the fabric in the final phase of the textile manufacturing process, providing additional virus protection. The filters are not reusable and can last up to one day. The certified filters used meet the performance requirements for 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 filter's inner pocket, further protects the product from microbes and germs. The antimicrobial treatment lasts for up to 30 gentle machine washes at 60° Celsius. A gentle wash cycle is recommended with less than 30 minutes of wash time. Packaging: Buff Filter Tube includes 5 replacement filters and care instructions. Made in Spain.