These are heavy duty and sturdy. My son in law just ask me for one because the cord he had in his car was breaking from use. I was able to offer him 3 different lengths as a choice. He was just grateful to get one. He didn't care what length he had, but setteled on the shorter one because his new car has USB connectors in the front seat. I keep several of these plugged in in my livingroom, because everyone one in my family has Iphones, and are always needing a charge. They are always on their phones, so they can plug in and just keep using their phones with a near by charging cord. They just don't wear out like traditional cords so I get these instead.