This box of circular filters are made for the Aeropress brewer. It contains 350 paper filters which is roughly a years worth of brews - which is a pretty decent amount of brews! They get rid of most fines and particles while also allowing some oils through.

If you want a cleaner cup with your aeropress, you could also use two filters at a time, or if you're interested you can also use these in a portafilter for espresso brewing to get higher extractions.