I actually bought these to make liners/filters for home-made COVID-19 masks per the information online regarding the filtration ability of high quality shop towels. We have also found that they are just excellent cloths for cleaning too, so we get a two-for-one. Highly absorbent, as well as lint and streak free cleaning for glass and stainless steel.As a COVID-19 protection, I followed the instructions for making the Los Angeles Suay Community Mask Coalition mask, who recommended the X80 material that was unavailable at the time of my purchase. This product has proven to be a good alternative.