SUNLU Silk Dual Color Pla Filament, Silk PLA 3D Printer Filament, Shiny Silk Texture, Dimensional Accuracy +/-, 1KG Spool (2.2 lbs), PLA Silk Dual Color (Red Blue)

Well-known as much for their S1/S2 filament dryers as for the filament itself. The material catalog — PLA, PETG, ABS, TPU, silk — is broad and frequently discounted on Amazon. Solid all-around option.