Glow In Dark Sand Colorful Fluorescent Super Luminous Glow Pigment Bright Decor Description: Material: Fluorescent Powder Color:as picture The chemical compound is and non-radioactive. it is fully charged in the Sunshine for around 1-2 hours, enjoy the effect in the dark environment. Weight: 10g Quantity: 13Pack Note: All the size are measured by hand, so please allow1-2cm differ. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Parcels included： 13 Pack Luminous powder