???Glow In The Dark Filament - Print as usual, then expose your model to sunlight or UV light for 30 minutes, take it back to the dark room, and the amazing glowing model is done! Attention: too long exposure time may damage the glow filament ???Glow Blue Filament - When not glow, the glow pla filament shows transparent and white with some spots. After charge, the filament will glowing blue light. which is very suitable for printing decorations for room, party, Thanksgiving and Christmas ???High Compatibility & Less Tangle - Due to the high quality standards in terms of manufacturing accuracy and the small tolerance in diameter of+/-0.03mm, it is perfectly compatible with most FDM 3D printers and 3D pens on the market. Full mechanical winding, bring more neat wiring, smooth entry, avoid possible blockage and line breaking ???PLA Filament Specs - PLA raw materials come from USA, 1.75mm Diameter, 1 kg spool (2.2lbs). Recommended printing temperature: 190??C - 220??C (374??F - 428??F), Heat Bed Temperature: 0??C -50??C (32??F - 122??F),Use a fully transparent spool to visually show the filament consumption situation ???Professional Packaging - Vacuum packaging with desiccant to keep it dry and keep out dust. 3D printer filament packing bag has sealed strips that can be reused, please remember to put it back into the packing bag timely after using to maintain excellent