These chalk markers are super cool. The colors are very vibrant and the color pops. You can write on just about anything you can imagine. You can leave notes on glass or windows. Because clean up is just as easy. You just wipe away and be done. That's easy. It's so fun for both young and adults. You'll have fun drawing or just writing notes. The colors are so vivid that it makes it fun to see what interesting things you can come up with.