"Upgrade Wide Compatibility: The reusable coffee filters compatible with Keurig 1.0 and 2.0 coffee machines:K200, K250, K300, K350, K360, K400, K450, K460, K500, K550, K560, K15, K31, K40, K44, K45, K50, K60, K66, K70, K77, K80, K100, B31, B40, B44, B50, B60, B66, B70, B77, B100, B140, B200,and also work with Keurig K-Classic, K-Elite, K-Latte, K-Cafe, K-Select, K-Compact, and Breville K CUP, Mr. Coffee K CUP, But NOT Compatible with: Keurig K-Supreme/Plus/Smart, K-Slim (see full detailed list) Eco Friendly & Economical: RETHONE reusable k cup compatible for Keurig is made of high-quality stainless steel and high quality BPA, which is 100% dishwasher safe, they are durable and reusable that cheaper and less wasteful than individual and plastic k-cups . It will help you save money in the long run. Also helping you to reduce your environmental footprint. Superior Taste: Stainless steel k cup reusable coffee pods offer superior taste compared to paper filters as they allow natural oils to pass through, giving your coffee a richer and more full-bodied flavor.it has more dense mesh filters which will stop any grounds getting in to your coffee cup, Easy to Use and Clean: These Reusable Coffee Pods are easy to clean, requiring only a quick rinse under running water or a simple cycle in the dishwasher. There is no need to purchase expensive and wasteful disposable paper filters or deal with difficult cleaning processes. It's no blow outs or clogs while using them like you with other reusable cups After-Sales : RETHONE Team offer the great service, We're sure that you will have a blast, but if you are not satisfied with the stainless steel k cups,just let us know."