Robe of the Fire-Rat

The was a garment woven, as its name suggests, from the hair of the fire-rat. It is an incredibly tough armor and has regenerative properties. It once belonged to the Inu no Taishō; however, he gave it to his human wife Izayoi after she gave birth to his half-demon son Inuyasha. It remained in Izayoi's possession until her death, when her son Inuyasha inherited it. Along with the container of rouge that his mother used, which was later smashed to bits by Naraku, the Robe was the only thing that he had of her's.

Abilities

 * The robe can withstand intense heat. When the wearer are protected from both heat and flame.
 * It's stronger than any suit of armor (book 1)
 * The robe acts as a very tough armor. However, as it was derived from a demon, the robe's powers can be affected by powerful pure barriers, such as the one that once surrounded Mount Hakurei. It becomes normal cloth and loses its defensive qualities when in such situations.
 * The robe is regenerative and mends itself.
 * It has some unknown property in connection with Lake Motosu that, in conjunction with four other objects, unseals Kaguya's powers.