Let me start by saying, this filament is a mixed bag. The colors—green, blue, purple, and rainbow—are vibrant, and the glow effect under UV light is genuinely mesmerizing. I printed a few Halloween decorations, and the way they lit up in the dark was a hit at my party!

Printing was smooth for the most part. No clogging, no warping, and the filament fed consistently through my FDM printer. The dimensional accuracy is spot-on, which is crucial for detailed prints. However, the glow effect isn't as strong as I hoped. It needs a *lot* of light charging (think direct sunlight for 30+ minutes) to really shine.

One downside: the glow effect varies wildly between colors. The green glows brilliantly, but the rainbow was barely noticeable. Also, the 250g spools feel a bit small for larger projects—I ran out mid-print on a bigger model.

Overall, it's a fun filament for small, decorative prints, but don’t expect consistent glow performance across all colors. Great for party favors or kids' projects, but maybe not for professional-grade glow effects.