I don't know guys, if you look at the teaser and at the images of the asset it seems to me that there is no zip in the front, it seems to me that there is a long seam that you can adjust to expose more or less cleavage. That's also why I was asking if there was a zip on the back. Unless the zip is on the inside for aesthetic reasons or to provide a better protection from the wind. But I'm not a biker either so I cannot tell.
View attachment 1117573
View attachment 1117576
View attachment 1117567
In any case from the images it does not seem to be a question of zipping up or down, the ends of the front seam are at the same height, what changes is the design of the décolleté, more open in one case, more covering in the other. So in that case there is no control over the exposure, whether there is a zip or not.
Zip or no zip, and in general, at this moment of the game I cannot see Sophia leaving out the twins like that (as in the first version of the teaser) unless she is asked explicitly by Aiden. If she has the control over the zip, knowing Sophia and the fact that she has to be wearing that in public, she would never go for open cleavage. The second version is more her (if she has control over it) as it does not show much and let the twins breath a bit.