It's my understanding that the ESB hero helmet is unique as it was the only of the six supertrooper helmets to utilize fiberglass. I've seen photos of the interior of the helmet and it very clearly is fiberglass, but my question is to what extent? Browsing TDH when most people discuss fiberglassing, it's in the context of coating the inside of a helmet already cast in resin or some comparable material. Is this how the original was done? Cast in some material and reinforced on the interior with fiberglass? Or was it rather done SOLELY in fiberglass? Also, the interior of the ESB helmet appears to be blue. Why is it blue? Does that mean the fiberglass was blue? Or did the team paint it blue for some odd reason? Hopefully some people much more knowledgeable than me in this field can help me out.