* Size 4 permanent coffee filter holder made of bio-based plastic * This permanent filter holder is washable and can be reused indefinitely * Bio-based plastic * 13.4 cm top diameter, 11 cm height, 11.4 cm bottom diameter, 4.3 cm diameter for the small rim underneath * Dishwasher safe Made of bio-based plastic, this coffee filter holder will allow you to make excellent coffee very easily. Place a permanent filter in it, and you won't need to worry about buying paper filters anymore. It will fit perfectly in your coffee maker.