Everything your heart desires, as long as it desires stationery.
While most markers and pens are water-based, this oil-based ink remains sharp and retains its dark black color on fabrics even after laundering 100 times.
Writes on cloth, plastic, metal, glass, leather, and a wide range of other materials. It is NOT suitable for soft PVC items such as swim rings, rain boots, and raincoats.
Probably the most amazing thing about the Onamae Mackee is that it writes on washi tape where most markers, even Sharpies, cannot.
This marker also makes a great comic art pen!