PLA Glow in the Dark Variety Pack (4x200g)Variety Pack includes four 200 gram (0. 44 pound) spools in different colors Glow rainbow color changes in each 5m Contains 20% glow powders that glow in the dark after absorbing light energy Exposure to strong sunlight or UV light for only 30 minutes gives a glowing effect Continuous glow in the dark Capable of repeated charging and glowing Supports high speed printing No bubbles, no jamming, no warping Reusable vacuum sealable bags Made from