NOT COMPATIBLE with K-Mini Plus, K-Duo Plus, Keurig K-Supreme/Plus/Smart, K-Slim (Multistream), K-Brew+Chill, K-Duo Hot & Iced(Gen 2). | Compatible with Keurig K-Series: K-Classic, K-Select, K-Compact, K-Mini, K-Duo, K-Duo Essentials, K-Slim (one Steam Brewers), K-Classic, K-Elite, K-Latte, K-Café. Keurig 1.0 (Office Pro): B40/K40/K45, B44/B50/B60, B66/B70/K75, B77/B79/B100, B135/B140/B145, K145/B150/K150, B155/K155/B200, B1250/B1255/B3000, K1500. Keurig 2.0: K200 series: K200/K250, K300 Series: K300/K350/K360, K400 Series: K400/K450/K460, K500 Series: K 500/K 550/K 560. Cuisinart: SS-5, SS-10, SS-15, SS-20. | MICRO MESH TECHNOLOGY FOR SUPERIOR BREW - Our Keurig reusable k cup filters are made up of superior quality stainless steel micro-mesh which is engineered to ensure an optimum flow rate of water through the coffee - this helps extract maximum flavours from your coffee. Moreover, the food-grade stainless steel is non-reactive and doesn’t alter the taste or aroma of your expensive coffee in any way. | DURABLE DESIGN THAT’S ECO-FRIENDLY - GoodCups Keurig 2.0 k cup reusable coffee filters are a far superior choice to paper filters as they do not have to be disposed of after every use and each Reusable k cup is expected to make thousands of coffees. This also means that our filters prove to be more cost-effective in the long run. Besides this, my reusable k cups have a unibody construction to ensure that the lid doesn’t break like the way it does in case of cheaper options. | SET OF 4 K-CUPS - Get a cup of coffee ready for yourself in a Reusable K Cup filter, transfer the coffee in another cup, wash the Keurig cup and prepare another flavour of a guest’s choice. Continue the process until you have satisfied the cravings of all the guests or family members with widely different choices. Or be smart & buy a set of 4 reusable k cups to prepare one cup (different coffees) after another, without the need for any transition or cleanups in between. | 100% RISK-FREE SATISFACTION GUARANTEE We offer you a 100% risk-free satisfaction guarantee to let you buy with confidence; no questions asked. However, we are quite sure that you will be super impressed with the functional effectiveness, quality, the ease with which the different flavours of coffee can be prepared one after another, and the breeze with which each filter can be cleaned.