This is PLA 2 3d Printing Filament! The FilaCube Research & Development Department perfected unique, proprietary plastic 3D filament formulas in order to provide a consistent, reliable and hassle-free 3 D printing experience for all 3D printer and pen users. After FilaCube PLA and PLA Plus (PLA+, PLA pro) filaments, this is our second generation PLA filament with smooth finish surface, strong layer adhesion (bonding/binding), low shrinkage, low-to-no warping and less brittleness.