You wrote "I just can't see it? " .. well .. I can't see it either ..
Still no clues as to what brand and model of seat post you are talking about,
So go to a bike shop and they can see what the heck you are talking about, then.
I expect Madison has several.
Given you assume too much of the list, without sending any pictures and detailed information,
you are on your own...
Good luck.
