Amazon.com: IIIDMAX PLA Plus Filament (Crystal), 1.75mm 3D Printer PLA+ Filament, 1Kg/2.2lb Spool of 3D Printing Filament PLA with Dimensional Accuracy +/- 0.03mm, Fits Most FDM Printers, Made in USA : Industrial
Crystal Clear filament problem – How do I print this? (Printing help) – Prusa3D Forum
3D Crystal Flex - High quality filaments - Formfutura