And you've asked me some questions about the collars i'm selling.
You can put the collars on any shirt you like, they are detachable. Of course not really on every shirt, because the neck measurements from every shirt aren't the same, but i can take any measurement you like. So it is smart to just take an average, so you can put the collar on lots of tops.
And if you have any more questions, feel free to ask them!