With a product as convenient as the Aquash, more than one brush is ideal. This medium sized Aquash brush is also available in a compact medium, fine and large size. Waterbrushes are a fairly new invention from Japan that have quickly gained popularity all around the world. There is a lot of potential in these brushes, as they eliminate the tools normally needed for watercolor paintings. They are also extremely portable, allowing one to paint on the go. Aquash is so simple to use, anyone can enjoy it. Just create a crayon sketch, and then use the Aquash brush to blend the lines and colors. Or, you can apply the Aquash brush directly to the crayons and use them like paint. The brush is very easy to clean, just squeeze out some water and brush it on the sponge provided or a paper towel. One brush can be used for an entire painting!