Packing Quantity: You will get 4 fluorescent sticky balls of many different colors, different colors light up the night, it is also very convenient for family and friends to play together Product Size: Each ball is the same size, about 1.8 inches / 4.5 cm, which is very suitable for grasping; for safety, to prevent accidents such as accidental ingestion, please use it under adult supervision Soft material: high-quality thermoplastic rubber, soft and safe, will not break, the surface is easy to clean, the surface will absorb some dust after use, the viscosity will decrease, and the viscosity will recover after washing How to play: You can throw these sticky balls on the wall, wait for the ball to fall slowly, and then catch it, which can help you relax; Note: 3-20 seconds for ceiling stickers, 5-30 seconds for ordinary white plaster wall stickers Product Features: When the stress relief balls absorb some light, they will glow in the dark, giving you a lot of fun, great for relieving phical and mental stress, enhancing emotional communication between family or friends, ideal birthday and holiday gifts Color: random color Packing list: 4pcs