GoodCups Reusable K-Cups are compatible with all Keurig 1.0 and 2.0 machines as well as the new K-Classic Series (except the K-Mini, K-Mini Plus, and K-Duo).
They have the same basic design as most other reusable K-Cups:
Where the GoodCups version falls short is the mesh's permeability. It lets too many coffee grounds through and into your cup.
Other reusable K-Cups above work with paper filters for a cleaner cup, but with the GoodCups Reusable K-Cup you really need them.