Hi Amy, I had the yianna post op but didn’t feel supported at all my mum had to tie knots in the top but then it made it uncomfortable, so I use two m and s post op bars and I love them, I wore the yianna yesterday as I was going out (it’s thinner) and by the end of the day I was aching and couldn’t wait to get the m and s one back on, but everyone is completely different maybe buy a few different ones then you have the option to change if you need too xx