Simple and Convenient: Suitable for Solofill, EZ-Cup, My K Cup, EkoBrew, Simple Cups and other K cup reusable coffee filters (not included), This design is for use with Keurig's reusable single serving filter system. Effective filtration: Using k cup filter paper can slow down the flow of coffee, and make the water stay in the mill for a longer time, and the circulation is finer to make the coffee stronger, eliminating the bitterness of the coffee without squirting. Designed to disperse the water to the greatest extent, so that there is no sludge and sediment at the bottom of the cup. Safety and Environmental Protection: Filter paper can effectively filter coffee alcohol, which is beneficial to our health. Made of high-quality recyclable and biodegradable material. K cup filter paper can reduce plastic waste in landfills and protect the environment. Easy Cleaning: After brewing, all you need to do to clean the k cup is to remove the disposable paper cup and coffee grounds and throw it away. The k cup filter will not leave coffee grounds, will not cause confusion and filter clogging. Save Money and Time: The cost of using these disposable filters is very low, so it is very economical. Save time to clean the disposable filter. size:About 51 x 31 x 32mm Material:Paper colour:White Package Contents: 4 pack * Coffee Paper Filter(100 each) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.