The thighs and back are silicone rubber, the helmet is a rotocast one from Sean Bradley, along with the vacuum formed equipment plates in the center chest. The chest, shoulders, forearms and lower legs are fiberglass with Smooth Cast 300 resin on the outside. About an 8 month build, with additional resin, paint and sanding, strapping and glueing. I always use the paint tutorial from Adam Grumbo.