Ages 4+. Color change games! Images appear like magic! Color & play games, do puzzles, mazes & more! 1 Surprize Ink color change marker, 24-page Surprize Ink magic game book. Use your Surprize Ink maker to magically reveal hidden pictures & puzzles! 24 pages of magic reveal games and activities! Conforms to ASTM D4236. Marker is non-toxic. Made in China.