Official AeroPress Micro-Filters. 

Compatible with the original AeroPress as well as the AeroPress Go.

Filters out the smallest of particles to create a grit free taste and a smooth cup of brewed bean juice, experiment with using 2 filters for an extra clean cup of coffee.

AeroPress Micro-Filters come in packs of 350 and come directly from the manufacturer in the USA. These filters are made from a biodegradable and compostable paper.