PowerLine III Flow USB-C to Lightning Cable: Super Strong, Surprisingly Soft. Once you’ve held this surprisingly soft silica gel cable in your hand, you’ll never go back to regular cables. Features a triple-layered system of copper wires, flexible graphene, and silica gel for enhanced flexibility without any loss in durability. The result is a cable with a tensile strength of 220 lbs (100 kg) and a 25,000-bend lifespan. More than enough to take the strain of a dangling iPhone or iPad. Use the included silica gel strap to keep the cable neatly coiled when stored away in a drawer, bag, pocket, or anywhere else.