Aeropress filters' micro design ensure that the finished brew is grit free, unlike other press type coffee makers. Assuming daily use this pack of 350 filters will keep an Aeropress brewing for almost a year Product features • Brand: Aeropress • Shape: round • Dimensions: Dia: 65mm • Quantity: 1x350 • Lifespan: single use • Fits: Aeropress • Brews: 1-3 cups • Country of origin: USA