Winsor & Newton Cotman 24 Water Colors. The Cotman Water Colors brush pen set is designed specifically for use when you?re outside of the studio. This popular pocket-sized plastic box features an integral mixing palette in the lid. Cotman colors and a brush pen with its own water reservoir. Precision, synthetic tip that feels like your favorite paint brush. Pocket-sized with comfortable, rounded corners. With a mixing palette inside the lid. Contains 24 assorted Cotman Water Color half pans & a pocket brush. Actual contents may vary. Color: Multi Colors 24 Pieces in box.