TPU

Thermal Polyurathane (TPU) is a soft flexible rubber like filament. It has great moisture resistance and high layer bonding strength and is suitable for your flexible projects. 

As with most softer filaments print speed will need to be reduced. A good starting point is around 40mm/s, but this could vary depending on the machine. You will also need a feeder system that doesn't allow the filament to buckle and get caught around the extruder gear.

(FFS-TPU-GREY)