Glow in the dark sand, can be used to make luminous bottles or fish tank. You can use it with ease. Long lifetime, repeatedly absorbing and emitting for several years. Beautiful, colorful and wonderful. Also, can be put in luminous bottles. Ideal for making kinds of diy crafts. Features -Color:Assorted Color -Material:gravel - Size: 6.50X6.50X1.00cm/2.55X2.55X0.39in - Create a beautiful effect with a combination of night sand and fluorescent particles. - DIY glow in the dark, you can fill it according to your own preferences and creativity. - Use in vases, , sand art, and more! A perfect party activity, use the Sand as a craft that guests can take home as favors. - Safe materials, safe and reliable, suitable for all ages. Laarge quantity can meet your quantity demands. - Unique gift choice, suitable for giving to friends and family or collecting. Package list: 9 × Luminous sands