As the son of a human woman and the Great Dog Demon, whose name can literally be translated to "dog demon", Inuyasha is a half-demon due to him being the son of a human mother and a demon father. Inuyasha's signature red garments are the Robe of the Fire-Rat, which are made of the legendary "Fire-Rat Fur (Hinezumi)" which is said to be fireproof. The historical reference can be found in the ancient Japanese folk tale "Taketori Monogatari", or "The Bamboo Cutter's Tale". From canon, we read "hinezumi no ke de otta koromo da, heta na yoroi yori tsuyoi ze"; the literal translation is: "It's clothes woven from fire rat's fur, stronger than poor armor." These claims are substantiated in numerous incidents throughout canon. We can see that Inuyasha cosplay costume are a jacket with "separated" sleeves, kosode (shirt), hakama (pants) bloused at the ankles and obi (belt)!