With this Putty you can knead, you can stretch and make it bounce and is perfect to use as a stress ball. If that wasn't enough, these Putty are also Glow in the Dark! After kneading, stretching, bouncing, you can store your putty again in the small supplied can. specifications: Color: Glow in the dark Material: gel Gender: junior Size can: 8 x 2 cm (D x H) Content jar: 50 grams Age: 4 to 10 years