Coffee Filter Papers.

package of coffee paper filters, specifically mentioning "COFFEE PAPER FILTER 40PCS" on the box. 

Here's some information about coffee paper filters:

• Function: They are used in various coffee brewing methods, such as drip coffee makers and pour-over systems (like V60 or Chemex), to separate coffee grounds from the brewed liquid, resulting in a clean, sediment-free cup of coffee.
• Material: Typically made from paper fibers, often from sources like wood pulp or abaca (Manila hemp). They can be bleached (white) or unbleached (brown), with bleached filters generally offering a more neutral taste profile.
• Types and Shapes: Common shapes include conical (for V60, Chemex) and basket/bucket filters (for traditional drip coffee makers). Disc filters are also used for devices like the AeroPress. The image shows conical-shaped filters.
• Impact on Flavor: Paper filters absorb some of the coffee's natural oils, which can lead to a cleaner and brighter cup compared to brewing with metal or cloth filters that allow more oils to pass through.
• Usage: To use them, unfold the filter, place it in the dripper or coffee machine's filter basket, add ground coffee, and then pour hot water over the grounds (for manual brewing) or start the coffee maker. It's recommended to pre-wet the paper filter with hot water before adding coffee to remove any potential papery taste and ensure it sits properly in the dripper.