6+. 4 markers, 15 mini double-sided sheets. Nontoxic. Colors surge on special paper! Shockingly bright colors. 5 x brighter than construction paper & regular markers (Color combinations of Neon Color Explosion markers and Neon Color Explosion Paper are up to 5X brighter than regular markers on construction paper.). Experience a surge of color like never before! Neon Color Explosion lets you create shockingly bright colors on colored paper. The markers and paper work together to create colors that are up to 5x brighter than regular markers on construction paper. Includes: 4 color explosion neon markers; 15 mini dual-colored sheets. 30 pages to color! Color in the SpongeBob SquarePants scene. Then flip to create your own! Contents and colors may vary. Please retain packaging for future reference. CE listed. Made in USA.