These paper microfilters were developed for AeroPress coffee makers and are an essential part of every brewing process. They perform the same function as all coffee filters: preventing coffee grounds from getting into the cup, thus ensuring a consistently grain-free cup of coffee.
They do this more reliably than most French press coffee makers, by the way. They're made of paper and are therefore biodegradable and compostable.
Compatible with AeroPress Original, AeroPress Clear and AeroPress Go coffee machines.