Yousu PVA Filament, Water Soluble Support 3D Printer Filament, 0.5kg, Natural PVA, Softens in 55-60°C Water Temperature for Easy Removal of Filament Support

Chinese manufacturer (Guangzhou YOUSU 3D Technology) specialising in co-extrusion silk and multi-colour PLA filaments. Sells on Amazon under the YOUSU brand.