In fact, Gyllenhaal’s excitement to wear the suit meant that ultimately not only was it kept as a practical costume for much of the film, but the character actually physically wears it in more scenes instead of wandering around in civilian clothes.
“We were just assuming—since we did end up building a fully practical costume—that [Gyllenhaal] wouldn’t want to spend time in it,” Carroll added. “We had said [to him], ‘You can just look cool. You can just look like a cool mercenary man. You can have your t-shirt on, leather jacket and jeans.’ And he was like, ‘Can I be in the costume? I really feel the character, I get it.’ So, not only is this costume practical, but [Mysterio] wears it everywhere it makes sense to wear it.”