We use lightweight microfibre towels, and they are brilliant! We first encountered them when we hired a motorhome in Australia, and we queried what it was they were giving us as 'supposed' towels; we were told to try them and see!
We bought ours at one of the shows some time ago and they work very well, dry a lot quicker than ordinary towels and are a lot less bulky. I don't know if ours are 'antibacterial' or not, or the same as you are looking at, but we wouldn't swap ours for ordinary toweling towels