The perfect "on the go" tool for all your watercolor projects. This soft cup collapses to be easily stored and holds an ample amount of water when full. The rippled design keeps brushes and tools from rolling away. Ideal for use with Gelatos® Colors and Goldfaber™ Aqua Watercolor Pencils! The water cup holds approximately 350ml or 12 ounces. PVC and Latex-free. Not suitable for solvents such as turpentine.