Rubeez by crayon rocks are eco-board templates that add texture and creative possibilities to crayon art projects! Use under paper like a rubbing. Use over the paper like a stencil. A sturdy kraft eco-board cutout created by crayon rocks eight (8) different designs offer endless creative possibilities. Use them under your paper like a rubbing. Use them over your paper as a stencil. 6 x 6 inches square. Compostable! When you are done with them, let 'em rot in the garden.