Reusable hygienic mask. Made of cotton and polyester double layer. Fabric processed with HeiQ Viroblock NPJ03 technology, a high efficiency treatment proven to neutralize bacteria and viruses, COVID-19 included. With ergonomic front stitching for a comfortable fit and elastic ear bands in hypoallergenic fabric, with OEKO-TEX Class I certification. Presented in an individual bag. For personal use by adults. Certified by EU Notified Body and manufactured according to UNE 0065 specification. Finishing and durability according to the CWA 17553 standard Treatment properties analysed according to ISO 20743: determining the antibacterial activity of textile products and ISO 18184: determining the antiviral activity of textile products. Aditive HeiQ Viroblock NPJ03, certified as safe and sustainable, all components with cosmetic grade, bio-based and recycled. Bacterial filtration efficiency: ≥ 90%. Highly resistant, up to 25 washing cycles. A minimum washing temperature of 60°C is recommended.