NoteTPU Filament, it is recommended to use the direct drive extruder for printing, which can greatly improve the success rate of printing Soft Filaments of High ElasticityCreality TPU Flexible Filament is a thermoplastic polyurethane (TPU) based filament specifically engineered to work on most desktop 3D printers. It has a shore hardness of 95A and can stretch 3 times more than its original length. Excellent bed adhesion, low warp and low odor, make these flexible 3D filaments easy to print. High Quality TPU FilamentDesigned and Manufactured with Clog-Free patent to guarantee a smoother and more stable printing experience with Creality TPU Rolls. Complete drying for 24 hours before packaging and vacuum sealed with desiccants in a transparent bag, no bubble and easy to print. Full mechanical winding and strict manual examination, to make sure the line is tidy and less-tangle, so as to avoid possible snap and line breaking.