Twistables Colored Pencils put a new spin on creativity. Simply turn the ends to twist up a brilliant color. See the colored cores turn inside the clear plastic barrels. They need no sharpening. When the tips get worn down, just twist them up, & you're ready to keep on coloring. Clear plastic barrels keep them from breaking & make it easy to see how much vibrant color is left. Clear barrel also allows easy color identification. Nontoxic color pencils are recommended for children ages 3 & up.