Re: All Things Superman: An Open Discussion - - - - - - - - - Part 18
... I think the (minimal) molding or padding is an "under-suit" and the costume is stretched over it, otherwise the "muscles" would bunch and not look natural. It was done that way for SR too.
I also think the "padding" is there for continuity from day to day.
...remember,- there is no discussion without DIS
(for all future DCU films - please keep the Dic* "jokes" to a minimum... and I don't mean Grayson)