From the manufacturer:
Softies Tri-Grip Crayons are made with beeswax for smooth color lay-down and durability. Individually wrapped to protect hands, these crayons are non-toxic and washable. The easy-to-hold triangle shape teaches children the correct writing grip. They are break-resistant and suitable for children ages 1 and up. The 12- and 24-Pack are in sturdy plastic cases and the 8-Pack is in a cardboard box. Recommended for ages 2 and up.