N95 and KN95 certification is for single use masks only. This is a requirement by the TGA (Therapeutic Goods Administration of Australia, www.tga.gov.au) to give the certification, that the mask is disposable.
Therefore, no reusable mask can have this certification.
Whilst our masks themselves have not been tested, the material we use as the middle filter layer has been tested for use in N95, FFFP2 and KN95 masks, and is used to make surgical masks.
It is the WHO and DHHS recommendation of 100% spun bonded polypropylene at 50gsm.