Filtropa #4 white paper filters. Designed and made in Holland. Unlike common low-grade paper filters, these won’t skunk your coffee with that paper/cardboard taste and they’re super sturdy to stand up to any stirring of the steeping you might want to try. Bonded without the use of any glues or chemicals, and certified dioxin-free. Each box contains 100 filters. Fits the Clever Coffee Dripper and Beehouse Ceramic Coffee Dripper.