Set of 25 Marker Pens from Marvin's Magic that can transform and erase colors.
Create amazing patterns with this clever set with pens that can change color, erase colors easily and even write invisible messages. Built with durable, shock-proof tips, draw in one color and the magic activator pen will change to another color. Create 3D letters and make magical pictures to proudly display or use the special pen to reveal your secret messages. So much fun and washable too - Magical Pens!