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. 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 degree C is recommended.