This mood pencil is made from synthetic wood-like polystyrene material. It reacts to the temperature of their hands by changing from base color to heat-activated color just in seconds. There are several vibrant color combinations to choose from! Your price includes a black imprint on the barrel of the pencil. The #2 lead pencil comes unsharpened. This bracelet is made of a higher quality black silicone and a stainless steel faceplate. One Size but fit for most adults' wrist. Easy to put on & put off also very secure can wear all the time. Consider a personalized bracelet engraved with message, a monogram, and a custom symbol.