It's actually not a stupid question and I've been wondering if someone was going to ask me. ^_~
Lightbringer, despite being able to fly and shoot light beams and all, is not exactly a well-sculpted human being. As such, in addition to the fact that since he lives in Minnesota, it can get pretty cold, he decided to forgo spandex in the costume, opting instead for modified sweatpants/sweatshirt (so probably 90% cotton, 10% polyester). The mask is a strip of cloth that's been heavily starched and conformed to fit his face (possibly with a transparent elastic to wrap around his head, I haven't decided yet how the mask stays on) along with the lenses of sunglasses. The boots are slightly-modified snowboarding boots and the gloves are standard cheap costume shop elbow-length gloves. While I haven't decided on an exacty metal for the gauntlets, it is something that was meltable and forgable and something that could be found in a scrapyard. I also haven't made a decision about what the cape is made out of, but I'd assume something fairly light, possibly silk, but I don't discount it being made out of a blanket made with slightly heavier materials.
Subsequently, this does unfortunately leave the outfit susceptible to damage provided its hit, cut, etc. in the righ way.
Quote of the Moment: “Greetings, my friend. We are all interested in the future, for that is where you and I are going to spend the rest of our lives.” ~Criswell~