Superman: The Man of Textured Rubber?

Yesterday, Warner Brothers has released an official sneak peak of Henry Cavill in the Superman costume from the upcoming Superman: Man of Steel movie:

While Cavill himself certainly looks more like Superman than the last few people I can remember in the role, I’ve got to wonder…

Why does Superman need to wear rubber?

It makes sense for Batman, Spider-Man, the X-Men and the like. Those guys aren’t indestructible. But last time I checked, Superman is. If your skin can stop bullets on it’s own, wouldn’t you want a costume with a little bit more mobility than molded rubber?