1、TPR wrapped in silicone material, flexible and soft, you can squeeze these hanging balls at will. 2、You can place these balls on the ceiling, wall, or desktop. They last for about 5-30 seconds. 3、When they absorb some light, they glow in the dark, bringing you a lot of fun. 4、Suitable for children and adults. Enhance the emotional communication between parents and children. 5、A nice birthday and holiday gift. A fun that can effectively help you relieve stress. These colorful sticky balls can help relieve your anxiety and bring fun. When you encounter any situation that makes you depressed, just throw these balls to the ceiling. And these balls are fluorescent design, will glow in the dark after absorbing some light. Features: TPR wrapped in silicone material, flexible and soft, you can squeeze these hanging balls at will. You can place these balls on the ceiling, wall, or desktop. They last for about 5-30 seconds. When they absorb some light, they glow in the dark, bringing you a lot of fun. Suitable for children and adults. Enhance the emotional communication between parents and children. A nice birthday and holiday gift. A fun that can effectively help you relieve stress. Specifications: Material: TPR + Silicone Quantity: 12Pcs Item Diameter: 45mm / 1.77in Package Weight: 144g / 5.08ounces Package Size: 150 * 100 * 50mm / 5.91 * 3.94 * 1.97in Note: When you receive these balls, do not throw them directly onto the roof as they are very sticky. First, please play it around your hands for a while, then you can throw it on the ceiling. It's going to go down for a while. Packing List: 12 * Stick Wall Balls 12 * Stick Wall Balls