Mantle (monastic vesture)

A mantle (Koine Greek: μανδύας, romanized: mandyas; Church Slavonic: мантия, romanized: mantiya) is an ecclesiastical garment in the form of a very full cape that extends to the floor, joined at the neck, that is worn over the outer garments. Especially in the case of Elijah, it was likely a tallit, a Hebrew garment that housed the fringes still seen today which are also translated at "the hem of His garment" in the New Testament.

Source: Wikipedia — Mantle (monastic vesture) (CC BY-SA 4.0)