Thanks for your comment and up vote. @blackcaviar
16 kg sounds like a light weight but everyone has to start somewhere. I know some men who had to start with a 12 kg kettlebell to be able to get the most benefit from it.
I also know a 50 year old woman who does TGU's with a 32 kg kettlebell , which is something many men will never achieve.
Walk your own path and let the numbers rise of their own accord.