[Glow in the Dark Filament]-The ZIRO glow-in-the-dark PLA contains premium glow powders and can emit fantastic light in the dark after absorbing light energy. Glow effect: UV light> sunlight> LED light. We suggest exposing your works to strong sunlight/UV light for about 30 minutes to get an excellent glow effect. [Hight Quality PLA]- ZIRO PLA filament is made of premium raw material with excellent printability: good ductility, higher strength, no odor, no warp, clog-free, and bubble-free. Full mechanical wire winding to avoid tangles and knots during printing. Completely drying for 24hrs before vacuum seal. Allowing 3d printing enthusiasts to create stunning works much easier.