YOUSU PLA Plus Filament Bundle 10x250g, 10 Pack 2.5KG PLA+ Sample 3D Printer Filament, 3D Printing Multi Pack Filament Glow in Dark pla Filament 250 * 4 Pack.
Chinese manufacturer (Guangzhou YOUSU 3D Technology) specialising in co-extrusion silk and multi-colour PLA filaments. Sells on Amazon under the YOUSU brand.