YOUSU PLA Plus (PLA+) Filament Bundle 4x250g, 4 Pack 1 KG Sample 3D Printer Filament, 3D Printing Multi Pack Filament Dimensional Accuracy +/-(2.2lbs),Black/White/Grey/Red
Chinese manufacturer (Guangzhou YOUSU 3D Technology) specialising in co-extrusion silk and multi-colour PLA filaments. Sells on Amazon under the YOUSU brand.