Very flexible wire that is easy to cut and crimp and neatly transfers all your electrical charges. Really stretchy material, but still vegan friendly (it's REALLY not calf leather, just silicone). I use it for wire harnesses on 3D printers. The flexible nature of silicone means wires that move a lot are less prone to breakage compared to PVC braids. Silicon is fairly heat resistant, although that's not what you want if you're using a 250C hot end. But it's good stuff. Worth a try.