A thawb or khameez (Arabic: ثوب) is an ankle-length garment, usually with long sleeves, similar to a robe. It is typically worn by men in the Arabian Peninsula and some surrounding countries. It is normally made of cotton, but heavier materials such as sheep's wool can also be used, especially in colder climates. Alternative spellings include Thoub and Thobe. It may also be known as dishdashah (also dishdasha) and in more colloquial English dishdash.
The most significant of these survivals is the sherwal, the very full trousers popularly called baggy pants. The sherwal is a prevalent and practical garment among villagers and mountain people. The richer the wearer the wider is his sherwal and the more fullness it contains to pleat in at the waist. A good sherwal of fine wool worsted may outlast its original owner. The sherwal of the Lebanese man is recognized by its fitted legs from the knees down. Other sherwals continue some of the fullness to the ankle. See also; http://almashriq.hiof.no/general/600/640/646/costumes_of_the_Levant/origin.html
wiki: **Hijab** or ħijāb (حجاب) is the Arabic term for "cover" (noun), based on the root حجب meaning "to veil, to cover (verb), to screen, to shelter" The Headscarf Is Not the Headscarf; read article about the cultural background of western and eastern scrafs; http://www.qantara.de/webcom/show_article.php/_c-549/_nr-6/_p-1/i.html
A kaftan (sometimes spelled caftan from Persian خفتان) is a man's cotton or silk cloak buttoned down the front, with full sleeves, reaching to the ankles and worn with a sash. See also;http://en.wikipedia.org/wiki/Kaftan