With the cotton coffee filter made by us and with a lot of love, you are not only protecting the environment, but also your wallet. 100% cotton produced in Germany plastic-free free from microplastics And this is how the perfect zero waste coffee is achieved: Use coffee filters like a standard coffee filter After making coffee, dispose of the coffee grounds in the organic waste Simply rinse the coffee filter with water Let the filter dry until the next use The microplastic-free coffee is ready! Our coffee filters (size 4) fit into all standard coffee machines and coffee filter holders. Rinse once with boiling water before first use.