Travel Watercolor Palette Box, All-in-One Portable Watercolor Kit with 24 Empty Removable Half-pan Grids, Travel Brush, Watercolor Cup and Clip – Plein Air Set for Right Hand Artists. Upgraded Dual-Tip Travel Brush: This portable watercolor kit features a versatile dual-ended watercolor brush, two ends of the brush can be used, the end of the graphite pointed perfect for sketching, drafting, or quick studies.