A hagoromo (羽衣, lit. "Feather Robe") is a long, thin shawl often associated with far-east celestial beings and deities.
Despite being thin, it is often depicted being able to remain upright in the air on its own. The cloth was modeled after ancient China's clothing called, pi-bo (披帛).
Buddhist deities' hagoromo-like shawls are called "天衣" (Chinese: tian yi, Japanese: tenne, ten'e, or ten'i). On Danbooru, tian yi should be tagged as hagoromo for convenience.
- Wikipedia: Tennin
- Wikipedia: Velificatio (a similar concept in classical Western art)
- Wikipedia (JP): Legend of Hagoromo