Features: Warm tip, put the dice in the sun, you will get a good luminous effect, similarly, the dice in the dark can also have the luminous effect; the luminous effect depends on the brightness of the environment; the darker the environment, the better the luminous effect will be. Safe material, the luminous dice set is made of acrylic and phosphor, non-toxic and tasteless, so it will not cause any harm to the human body. Permanent luminous performance, the 6-sided dice have a continuous luminous power; generally, if the dice fully absorb the light energy, they can continue to glow in the dark for 2-3 hours; when the energy runs out, they can glow again by repeating the absorption of the energy. Wide occasion, the dark dice can be used in a wide range from casino, party games or just as table decorations, the black dot decorations allow you to give you many options in party theme ideas. Attractive appearance, there are 10 pieces of luminous dice with nice appearance, feel and rolling performance. Specifications: Material: Acrylic Size: 14mm/16mm Note: Please allow 1-2cm error due to manual measurement, make sure you do not mind before ordering. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 10 pieces of luminous dice