Easy to Print & UV Resistant TPU Filament: PolyFlex TPU90 is a flexible 1.75 TPU filament (thermoplastic polyurethane) with a shore hardness of 90A. It offers excellent flexibility while supporting high printing speeds. UV-resistant for outdoor use, PolyFlex is compatible with nearly all desktop FDM/FFF printers and requires no hardware modifications. Tangle and Moisture-Free TPU Filament: Polymaker TPU filament is carefully wound to prevent tangling and is dried and vacuum-sealed in a resealable ziplock bag with a desiccant. Always secure the tip to avoid nodes, and use the side holes on the spool to help prevent tangling. Flexible, Strong, Consistent & Outstanding Layer Adhesion: Polymaker TPU filament is incredibly easy to print, providing exceptional flexibility and shape memory. Its tough, rubbery consistency offers outstanding layer adhesion, ensuring bubble-free, jam-free, and warp-free prints when using the correct settings. Wide Applications: PolyFlex 1.75 TPU filament