The fun mood pencil changes color as the temperature of the palm of the hands changes.The heat sensitive coating reacts to changes of temperature and pencil changes its original color to heat-activated color in several seconds. The pencil will return to its original darker color as the tempature cool down to original level. The Mood Pencils with Colored Eraser leave a spot for your own custom text on the barrel. Made from wood material, measuring 7-1/2 inches, this custom color changing mood pencil with colored eraser. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. We offer logo printing and full packaging customization. Product Highlights: Sleek design, durable build, easy to grip.