CMF Speaker S and M are portable Bluetooth speakers inspired by the geometric shape of milk cartons. Both models are designed with removable front panels and interchangeable knobs, allowing their appearance to be further customised with 3D-printed parts. Music and volume can be controlled through physical buttons without using a phone. The compact Speaker S is equipped with a carabiner hook for easy carrying, while the larger Speaker M features a built-in handle and a more powerful sound system. Both models offer up to 18 hours of playback, IP68 water and dust protection, and options for connecting multiple speakers.