TPE filament is a printing material for 3D printers whose name stands for "thermoplastic elastomer". It is a type of plastic that combines the properties of two different materials. The word "thermoplastic" means that the material softens when heated and can be melted and shaped, which is the principle of FDM/FFF 3D printing, and solidifies again when cooled. The word "elastomer" refers to its key property, which is high flexibility and elasticity similar to rubber. The resulting TPE prints are therefore soft, flexible and stretchable, returning to their original shape when the force is released. Due to this rubbery nature, TPE is used to manufacture items that require flexibility, shock absorption or vibration resistance. Examples include flexible phone cases, gaskets, non-slip pads, shoe soles or flexible components for models and robots. Printing with this material requires specific printer settings, in particular lower print speeds, as the soft string tends to bend or jam in the printer's feeding mechanism.