Tiny Hole for Safe: There is a tiny hole in the middle of crayons. That will avoid to kids when they have swallowed the crayons. Air will pass through the tiny hole.Recommended for children over 36 months. Use under appropriate supervision. Made of Non- Material: These stackable crayons are made of edible material. Accidental ingestion will not cause toxicant response. The edible material will naturally excreted from body. Specially Designed Shape: Round shape penholder is designed specially for toddlers, kids, children. This palm grip design makes easy holding to kids. Easy to Paint: It is suitable for almost age kids, child, toddlers and adult. Easy to color on and also easy to remove with an eraser. Interested Stackable Toys: This paint crayons also can be used as building blocks to develop intelligence. Fingers will not be stained with the crayons. Colors: 12 Colors Material: paraffin Dimension: 1.37 x 1.37 x 2.15 inch Weight: 180 g Package Contents 12 * Finger Crayons Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.