khaftan

Many of the passers-by are well to do, shop-keepers and merchants, clothed in flowing "khaftan" of coloured cloth or silk, over which, hanging loosely from their shoulders, is the black goat's wool

Peeps at Many Lands: Egypt R. Talbot Kelly 1897

That thing looks like a cross between a khaftan and a mumu.

Sweaty, but Stylish « Awful Library Books 2010

The men are tall, with strong aquiline features and keen eyes, which look very piercing beneath the "cufia," [10] which is wrapped around their heads; their clothing is loose and flowing, a black "arbiyeh" being worn over the "khaftan," or inner robe, of white or coloured stripes, and their boots are of soft leather.

Peeps at Many Lands: Egypt R. Talbot Kelly 1897