It's learned the redesign of the new Batman suit for Batman Vs. Superman will make the costume more comfortable and flexible for Ben Affleck.
Costume designer Michael Wilkinson, who also worked on Man Of Steel, told fashionista.com that getting the new Batman suit right was paramount to director Zack Snyder.
"That’s actually one of the first things that Snyder mentioned to me in one of our initial meetings," Wilkinson said. "It’s a very important thing to Zack that the Batsuit would be comfortable and very flexible, but then would be able to perform in a very natural and forceful way. So a lot of incredible engineering went into the development of the new black cowl."
Interestingly enough, when Ben Affleck was cast as the new Batman, Christian Bale's advice for Affleck was "to tell the costume designer to make sure the cowl doesn't feel like the Joker is sitting on your shoulders every time you try to turn your head."
Bale also said it took three people 20 minutes to take the cowl off of his head and that he found it "ridiculously unheroic" when he needed help to "take a pee."
So actually it sounds as if Zack Snyder is going for a more realistic approach for his new Batman costume than even Christopher Nolan's approach, and the Batman costume has come a long way from the Michael Keaton design, which had no neck movement at all.
Update: THR has further comments from Wilkinson where it doesn't sound as if the new Ben Affleck costume is all that more convenient.
"It does involve multiple costumers," admitted costume designer Michael Wilkinson, adding that turning the actor into the DC Entertainment superhero is "not the sort of thing that I could just sit in Ben's trailer and he gets into it himself. It's a six-handed operation."
"Batman v Superman: Dawn of Justice" has a March 25, 2016 release starring Ben Affleck as Batman, Henry Cavill as Superman, Gal Gadot as Wonder Woman, Amy Adams as Lois Lane, Laurence Fishburne as Perry White, Diane Lane as Martha Kent, Jeremy Irons as Alfred, Jesse Eisenberg as Lex Luthor, Ray Fisher as Cyborg with Callan Mulvey, Holly Hunter and Tao Okamoto in new character roles for the film. Justice League is to follow directed by Zack Snyder as well.