http://shop.crayola.com/color-and-draw/markers/window-mega-markers-4-ct.-5881660002.html
Item Number: 5881660002
Use Crayola Washable Window Markers to create fun and colorful designs on windows for holidays, birthdays, graduations, and other special occasions. Crayola Window Markers also work great on glass picture frames, mirrors, Mylar and more.
4+Recommended
for ages 4 and up