Made to fit a Kalita 1-2 cup server (base diameter 9.5cm). It has some stretch, so it should fit other brands for 1-2 cup servers as well. Slits are intentionally placed on the sides so you can always see the extraction volume markings. You can also take out the handle attached to the server body from here (in that case, the extraction markings will be hidden, so please measure while extracting on a kitchen scale). ◈ Base diameter: Approximately 10cm ◈ Height: Approximately 7cm ◈ Body: 100% Acrylic, Button: Wood ◈ Machine washable in a laundry net