Flexfill TPU is definitely worth a try. Flexfill TPU has two available shore hardnesses: 92A and 98A. The 92A line is very soft, while the 98A line is a bit stiffer than some of the other TPU filaments on this list, plus it’s easier to print. The company’s Flexible TPE is safe for food-contact applications and for applications in contact with skin. It’s also available in two different hardnesses 90A & 96A Shore. Filamentum’s new Flexfill PEBA 90A is flexible with unique thermal, mechanical, and chemical behavior from other TPEs. It’s especially retains its flexibility at subzero temperatures.