A water brush allows you to paint anywhere! Just fill the brush handle with water and you're good to go! To use, gently squeeze the brush and water flows directly through the bristles. Great for travel, urban sketching and folks not wanting to collect lots of supplies. We offer 2 sizes, a fine tip and a medium tip. Both are handy to use with our painting kits. The medium is great for larger areas, whereas the fine will help you add in all the details you desire. Fine is highly recommended for our mini kits!