Oodles of Doodles means oodles of fun. Color and draw on a variety of surfaces with these incredible markers. Oodles of Doodles Multi-Surface Markers can write on an amazing amount of things. Try them on glass like windows and mirrors and even blackboards and whiteboards. And of course they'll work on paper as well as wood and fabric too. The simple rule is that these markers write permanently on porous surfaces but can easily wash off on non-porous ones. With Oodles of Doodles, you can leave fun messages on mirrors in your house, color in fun wooden masks for a masquerade. One magical marker? Oodles of possibilities!