Sand Molds Glow In The Dark Starter Set &ndash; 1 lb Glow Play Sand, UV Glasses, Pen Light and Sand Tray Glow Sand Molds Starter Set: 1 lb of glow sand, UV LED glasses, UV pen light and play sand tray Sand, play mat and all other plastic components react in the dark with UV LED glasses or pen light Write glowing messages; Draw any design with the UV pen light and UV LED glasses It's safe and long lasting; 100% Non-Toxic and Anti-Bacterial; Won't dry out; Use over and over This soft moldable sand glows in the dark and stays clumped for super easy clean up; Ages 3+