GLOW PLA FILAMENT - Contains 20% glow powders that glow in the dark after absorbing light energy. Exposure to the strong sunlight or UV light for only 30 minutes will get an amazing glow effect, but too long exposure time may damage the glow filament. Green has the best luminous effect, then blue, deep blue purple, shiny green, red glow filament | UPGRADE GLOW FILAMENT - AMOLEN Specializes in researching Glow in the Dark Filament, using the most advanced Glow materials, PLA raw materials come from USA. All the glow filaments on the market are a bit brittle, please print with patience and keep the angle smooth when feeding | HIGH COMPATIBILITY - Perfectly compatible with most of the FDM 3D Printer and 3D Pen, Comgrow Creality Ender, ANYCUBIC, Creality 3D, SUNLU, ERYONE, MYNT3D, 3Doodler, 1.75mm pla filament consistent diameter, dimensional accuracy +/- 0.03mm | SAFE FOR KID & ECO-FRIENDLY - When not glow, it is white and clear, which is very suitable for painting. Your child can paint it with any colors. It will stimulate children's imagination, creativity and practical ability. AMOLEN pla filament is 100% safe to children and degradable eco-friendly | VACUUM & REUSABLE BAG - Vacuum packaging with desiccant to keep it dry and keep out dust.The bag has a sealing strip,the pla filament can be put back into the bag after use and sealed for storage