These guys seem to have made the cable thinner by switching to lower rated insulation. The 30 volt limit isn't an issue for any normal USB usage, and they charge as fast as you'd expect from a 21Ga cable. (Most of the cheap ones you buy are 26GA and just can't handle the full charge current. They charge MUCH faster. USB cables need it. The little springy things on the end of the cable that connects to the device are nice bouncy much better than mine a collection of cables from three or six years ago get them they are cheap they do the job perfectly... and you can empty your drawer of old cables and replace them with very quick, very modern replace .They significantly reduce the loading time.