Lyra Color-Giants Unlacquered Pencils are large diameter coloured pencils which last 3 times longer than regular coloured pencils. Their large hexagon shape contains highly pigmented 6.25 millimeter coloured cores. The natural unlacquered finish is safe for children who may put them in their mouths. These extra large break-resistant cores are perfect for smaller hands and for shading large areas, last 3-4 times longer than standard size pencils, require less frequent sharpening, and are AP certified non-toxic.