Its shore hardness is standard for TPU at 95A, meaning it really is smooth and flexible just like a flip-flop Or maybe a tire. Certainly this all is dependent upon how thick you make the walls and infill. Our sample print applied two walls and 10% infill, turning the Thwack https://3d-printer-filament01122.tribunablog.com/getting-my-3d-printer-filament-to-work-47457583