3 in 1 activities. The special pen does it all! Age 3+. A rainbow of colors appear like magic! Reveal the invisibly printed pictures and answers! Unscramble the stickers to create a surprise picture! www.leemagicpen.com. Facebook: www.facebook.com/magicpens. nick.com. Conforms to ASTM D4236 - Non-toxic. Printed in USA.