Enjoy magical art like you've never experienced before. Magic Puffy Pens by Ooly are a very special set of pens that puff up when you apply heat. Amazing! It's all in the magic ink; just draw with your Magic Puffy Pens, let dry and add heat from a hair dryer and you've got incredible 3D art. Magic Puffy Pens are great for unique art projects, customizing greeting cards, making your coloring books really stand out and so much more.> Comes with 6 neon color pens.