Our biodegradable paper micro-filters absorb bitter oils, filter fine grounds, and ensure smooth, grit-free coffee. High quality paper coffee filters are exclusively designed for use with Standard size AeroPress coffee makers. Micro-sized holes filter and catch coffee grounds, stopping them from passing into the cup, while the coffee filter paper absorbs bitter tasting oils. Our paper AeroPress coffee filters are an essential part of the brewing process. 350 count replacement AeroPress filters.