Perfect for colouring, drawing, doodling and bullet journals. This Deluxe set of 22 Chameleon Changing Colour Pens allows you to blend colours by simply switching the cap!These pens are refillable with replaceable Japanese Nibs so you can keep using them for years to come. The ink these pens use is alcohol-based for professional quality and use on most surfaces including fabric, plastic, glass and wood. Just one of these pens can be used to create and blend multiple colour tones making them great for all kinds of colouring activities!. Refillable. Set of 22. Replaceable Japanese nibs. Alcohol-based ink. Create and blend multiple colour tones. Permanent on most surfaces including: glass, wood, plastic, fabric