Stacking Crayons are the amazing stackable crayon set all in one crayon. Each heart or star has a single colored crayon and is totally interchangeable from the rest. Mix and match the 12 color hearts or stars so you can make your own unique crayon. And each crayon comes with a fine point so you can make all sorts of detailed coloring projects. And for extra fun, you can mix and match crayons with your friends to make all sorts of stacking creations.