Stack of five, high quality, ceramic colour mixing trays with a lid, which also doubles up as a mixing tray, measuring 75 mm (just under 3") in diameter, and each bowl is 13 mm (about ½") tall.
Porcelain is a great surface for mixing paint, so easy to clean, and they stack neatly for storage.
As Porcelain is weighty, the mixing dishes sliding around while in use is minimal or non-existent.
