YOUSU Upgraded PVA Filament, 500g - Enhanced Water-Soluble Speed & Softening Effect, Water-Soluble Support Material for 3D Printers, Compatible with PLA & Most FDM Printers
Chinese manufacturer (Guangzhou YOUSU 3D Technology) specialising in co-extrusion silk and multi-colour PLA filaments. Sells on Amazon under the YOUSU brand.