The pinout and cable gauge can determine fast charging capabilities, and i have always had these cables work for me for fast charging. It is NOT required to be USB 3.0. That said, your mileage may vary. Your particular phone or charger MAY require it to be a USB 3.0 cable, different manufacturers like to play games to get you to spend 20x the cost just so you buy their cables. I have had fast charging results from these cables on my LG V10, though, as long as I also make sure to use a fast charging charger, of course. I don't believe that they fast charge when plugged into the computer, though, even when I make sure to plug it into a USB 3.0 cable.
Works well with late 2016 MacBook Pro with TouchBar
I'm not a fan of buying a USB-C to USB 2.0 adapter to connect to an existing USB cable when an entire replacement USB-C to USB-2.0 micro B cable purchased for less than the adapter itself. This cable works well with my MBP w/ TB and I don't have adapters to worry about.
I bought this to use with an Owl Labs Meeting Owl, basically a smart USB webcam w/ microphone and speaker. It works with no problem. Each end has molded strain relief, so it looks like it will hold up well.