A. Bubble Pen --- Simply draw and dry using a blow dryer or heater. All pens in this set contain puffy magic ink that leaves whimsical lines that you can easily blow out by simply heating or drying. B. Easy to use --- Draw anything you like on paper or any surfaces. Heat evenly using a blow dryer or microwave compatible for at least 2 minutes and you will have amazing puffy art projects. C. Puffy 3D Art --- Create scrapbooks that never go out of style. Choose from 6 neon colored pens and mix them to make magical 3D artworks. D. Clean and washable --- It can be washed off skin, most washable clothes and most painted walls. Perfect for art projects, classroom activities and more detailed activities. E. Great masterpieces --- Let your creativity flow. The fine tips of the pens allow you to trace lines with finer details so you can accurately use your imagination on paper. Blown art craft every time.