Soft Filaments of High Elasticity - Our Giantarm TPU Flexible Filament is a thermoplastic polyurethane (TPU) based filament specifically engineered to work on most desktop 3D printers Clog-Free, Bubble-Free & Easy-to-use - Designed and Manufactured with Clog-Free patent to guarantee a smoother and more stable printing experience with Giantarm TPU Rolls