Make coloring even more fun when you add these Owl Stacking Crayons to activity time! A wise way to give kids the freedom to express themselves, these adorable stackable crayons are also great giveaways for birthday party bags! Each stack includes purple, yellow, pink, green and blue pointed crayons. Safe and non-toxic. Plastic. 1/2" x 5" Conforms to ASTM D-4236.