Prusament PETG Ultraglow Green 800g (NFC)

Prusa used the maximum amount of glowing powder they could achieve while maintaining reliable printability and delivering exceptionally bright luminescence. Prusa felt like there was no strong reason to make another mediocre glow-in-the-dark PLA filament, as the market already has plenty. Instead, they did what they do best: took it up to eleven.

Glows all night long
Prusament PETG Ultraglow can be charged by exposing it to both UV (most effective) and visible light sources. When charged, the filament glows strongly for several minutes, then the glow intensity gradually decreases. In total darkness, a weak glow can be visible even after 6-8 hours after charging.

Brightest of them all
Prusa tested other brands of glowing filaments. Prusament PETG Ultraglow shines by far the brightest when compared to common glow-in-the-dark PLA.

High safety
Prusament Ultraglow is filled with strontium aluminate, which is a safe alternative to historically used Phosphorus. It's not toxic or radioactive.


