The special compressed nature of these pastels makes them cleaner to work with, smoother, and gives them nearly three times the mileage of common colours. Sticks measure 6.88 cm x 1.1 cm (2 3/4” x 7/16”) and are stored in a reusable plastic tray with lift-lid. For use on paper and cloth or brushed on ceramics or plastercraft. No-toxic. 24-colour set.