PLA+ 3D Printer Filament 250g Silver, Tougher & Stronger PLA Plus Material for Precision Prototyping, Clog-Free & Warp-Resistant, Compatible with Most FDM 3D Printers
Chinese manufacturer (Guangzhou YOUSU 3D Technology) specialising in co-extrusion silk and multi-colour PLA filaments. Sells on Amazon under the YOUSU brand.