Safety material: The sticky ball is made of high-quality rubber material, which is absolutely safe and odorless for human skin health Dont worry about getting hurt Glow in the dark: This sticky ball can absorb light, sunlight and flashlight can absorb and store, then put it in the dark, it will glow beautifully Ceilings can hold for 3 to 20 seconds, and regular white plaster walls can hold for 5 to 30 seconds Super fun ball: Whether you pinch it or throw it on the ceiling, wall or floor, it wont let dirt stick to the ceiling Exercise the babys grasping ability and relieve the pressure of adults DURABLE CYCLE LIFE DESIGN: This glow-in-the-dark sticky ball is super sticky enough to stick to ceilings or walls When it is found that the stickiness is not persistent, it can be rinsed with tap water, and the new stickiness will be restored after drying