Kokuyo

Take coloring to a new level with these smooth, oil-based crayons from the Japanses brand Kokuyo. The colors are transparent, so you can use them to color over drawings without covering the drawings up. You can also blend the colors together on the paper using your fingers.

The crayons are made of safe mineral oil, making them great for kids as well as grown-ups. Their film wrappers are micro-perforated, so you can easily peel them off in short, clean increments as the crayons get used up. The crayons come in a cardboard storage tray for keeping them organised and safe.