This Sakura Koi watercolor set is the size of a post card and includes everything you need to paint with watercolors on-the-go! To begin, there are 18 vivid watercolors that are formulated to blend easily, to create an endless color range. The watercolor brush holds 9ml of water and features nylon fibers for the brush tip. A pen cap is included to protect the brush fibers during non-use. The Koi watercolor pen set also contains 2 dabbing sponges and a snap lid that converts into an easel for post-card sized paper! Finally, there is an integrated pegged palette that secures to either the left or the right side of the kit. Paints, a brush-pen, 2 dabbing sponges, an easel and a palette--That's five different watercolor tools that neatly fold away and fit inside of a pocket or bag with ease!