Durability 98A TPU MaterialPRILINE Flexible TPU Filament is thermoplastic polyurethane (TPU) based filament with wonderful flexibility and durability. Featuring shore hardness of 98A, the TPU is the most consistent filament, works great for certain structural parts that also had some flexural areas, like RC parts, gaskets, and so much more. Clog-Free & Excellent Layer AdhesionPRILINE TPU Filament use excellent raw material and clog-free formula to guarantee the seamless and smooth printing experience. It is a perfect combination of tough, slightly flexible and able to produce detailed and nice looking prints.