[Transparent Color]: The filter paper shape retainer, clear design allows you to see whether it fits well, adding fun and enjoyment to your coffee making experience. [Material]: Coffee Filter shape retainer is made of PETG material, which is sturdy and can be used for a long time. [Compact Size]: which is small, , easy to carry and store, and does not take up space. [Design]: 20 ribs are designed on the coffee filter cup, corresponding to the corners of the origami filter cup, so that the filter paper fits the origami filter cup better and facilitates the of hot water without accumulating on the paper . Filter paper assistant can fix the filter paper and make the filter paper fits the filter cup.