The preferred watercolors specified by schools and teachers across America. Semi-moist watercolor formula and choice pigments blended with specially formulated binders and dispersing agents has kept Prang watercolors a leader in the art world. Each has a white mixing box. Semi-moist watercolors contain no wax. Brilliant pigments mix cleanly, flow easily, & stay true. White, segmented lid for true color mixing. Includes #9 natural hair brush. AP certified nontoxic.