Each face mask houses a RESPILON nanofiber membrane – an extremely dense network of strong fibers that can stop even the smallest solid and liquid particles. The RESPILON membrane, as well as the mask itself, were tested and approved by renowned laboratories, such as the EMPA ( Switzerland ), the Brno University of Technology ( Czech Republic ), and the Nelson Laboratories (USA). We recommend using a new mask after each removal of the previous one from your face.
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