Atef is the specific feathered white crown of the Egyptian deity Osiris. It combines the Hedjet, the crown of Upper Egypt, with curly red ostrich feathers on each side of the crown for the Osiris cult. The feathers are identified as ostrich from their curl or curve at the upper ends, with a slight flare toward the base. They are the same feather as (singly) worn by Ma'at. The crown is also worn by Sobek. They may be compared with the falcon tail feathers in two-feather crowns, such as those of Amun which are more narrow and straight without curve.