24-color twist-up crayons allow for diverse expression with a paintbrush included. - Number of colors: 24 - Type: Twist-up crayons - Target age: 3 years and up - Accessories: Includes a paintbrush Used about 10 colors once. Received as a gift from someone in Saudi Arabia. At the Expo. These crayons seem to be made of a material that stabilizes when painted with a water brush after application. I haven't actually tried it, but according to online research, they may be washable depending on the material of the writing surface. Thank you for looking. Washable crayons