The filters for Aeropress are made of high quality Japanese paper with a density of 53 g/m². They have excellent density and durability, ideal for both the original Aeropress and the Aeropress Go. Features: - Diameter: 64 mm - Paper density: 53 g/m² - Environmentally friendly oxygen bleach Each pack contains 100 filters for long-lasting use and unrivaled filtration quality.