SUNLU Matte PLA Dual-Color 3D Printer Esthenic Filament 1KG, Seamless Two-Tone Shifts & Soft Matte Finish

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.