Compressed cellulose sponges that expand in water have many special uses as well as being a useful clean-up tool. Before expanding, the sponge lays flat, providing an easy surface upon which to draw or stencil.
It can be torn or cut with a scissors or knife to any shape or size. It's also great for applying color to all sorts of fabrics and other surfaces.
Miracle Sponges measure 1/8" (3 mm) thick when dry.