Compatible with better light absorption and luminescence - Place these exquisite marbles in the sun or expose them Compatible with ultraviolet light Compatible with absorbing energy. The more these glass marbles absorb, the stronger light they will emit. Experience their luminous charm at night. High-quality technology - Made of high-quality glass are luminous marbles. Their smooth surfaces allow seamless rolling of the marble toys. Endless fun Compatible with all ages - Charming and versatile, our luminous marbles are perfect Compatible with marble games, such as marbles and traditional games, whether day or night. The marble run Compatible with improves hand-eye coordination and fine motor skills and promotes quality time between Compatible with parents and children. Multifunctional - Compatible with games, luminous marbles can also be used as vases, gift bags or aquarium fillings, as well as elegant table decorations. Where, roll, throw or integrate marbles into DIY projects Compatible with decorating your living room. Affordable set - 20 luminous glass marbles (0.63 mm in diameter, slightly different due to manual measurement) with 10 different colors are perfect birthday gifts for children. Color: As shown Material: Glass Compatible with package content: 20x Luminous marble balls (10 colors, 2 of each) Only the above Compatible with package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement error is +/- 1-3 cm.