Brew Smoother, Cleaner Coffee With Biodegradable Micro-Filtration 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. Paper AeroPress coffee filters are an essential part of the brewing process. FEATURES 350 white paper micro-filters included per pack ; Micro-filtration removes fine grounds for grit-free coffee; Absorbs bitter-tasting oils for a smoother, richer flavour; Made from biodegradable paper; Ideal for use with finer coffee grounds ; Made in the USA; Note: AeroPress coffee maker not included.