Reusable hygienic mask. Made of cotton and polyester triple layer: Outer layer in cotton/polyester. Intermediate layer in Meltblown (polypropylene). 100% cotton inner lining. Ergonomic front seam for a comfortable fit and comfortable elastic ear straps in hypoallergenic fabric, with OEKO-TEX Class I certification. Available in a wide range of colors. For adult personal use. Tested and manufactured according to European standard UNE-CWA 17553:2020. Bacterial filtration efficiency: ≥ 90%. Highly resistant, up to 25 washes. Washing at 60°C is recommended.