This 24 piece watercolor brush markers are pen art at it's finest. They are water based drawing markers that brush but are like colored pens and they work so very well. They go on smooth and soft, are greata for adult coloring books or children's art work. They are so bright and colorful and work so easy. They flow very well and stay wet while using. They are water based so it's easy to clean up and clean the kids up as well.