Bubble Pen --- Draw easily and dry with a fan or heater. All pens in this kit contain puffy magic ink that leaves whimsical lines you can easily puff up by simply heating or drying. Easy to Use --- Draw whatever you want on a paper or other surfaces, apply even heat with a hairdryer or microwave for at least 2 minutes and you will get amazing puffy art projects. Puffy 3D Art --- Create scrapbooks like never before. Choose from the 6 neon colored pens and mix them to create magical 3D artworks. Clean and Washable --- It can be washed from the skin, most washable clothes, and most painted walls. Perfect for art projects, classroom activities, and more detailed activities. Fine Masterpieces --- Let your creativity flow freely. The fine tips of the pens allow you to trace lines with finer details so you can put your imagination on paper accurately. Puffy artwork every time.