Sun and sand protection is the primary objective with Bedouin clothes. Bedouin garments can be wrapped around the wearer to keep the sand and sun out. Loose clothing tends to shield the skin from sun and provide enough open space that heat absorbed by the cloth is not directly transferred to the skin. Each Bedouin tribe member wears slightly clothes to indicate locality, social position and marital status, with these things usually being indicated by embroidery on their cloak, headdresses, jewelry and hairstyle worn on special occasions. Each tribe has is own designs that are worn on their clothes, Tents and camels bags also carry these designs so that caravans can be identified from a distance. A typical Bedouin man wear a white cotton foot-length, long-sleeve shirt, an aba (a long khaki ankle-length sleeveless robe), and red tasseled sash. Sometimes they wear a dagger in their belt. At night the aba is used a blanket. In many places Bedouin men wear a thobe (a long white gown). Sometimes they wear a long sleeve coat called a gumbaz or kibber over the thobe. Bedouin men tend to wear camel hide sandals, ankle boots or Western-style shoes. Some go barefoot in the hot sand. To make standing in the hot sand bearable sometimes they stand on one and then alternate back and forth with the other foot. If they step on a thorn they use another thorn to dig it out. On their head Bedouin men wear a Yasser-Arafat-style keffiyeh , which can be draped under the chin, lifted across the face for protection against sandstorms, or crossed under the chin and fixed on top of the head for warmth. The cloth headdress held in place by a thick wool cord of made of black goat hair. When it is cold he may wear a round wool cap under the a keffiyeh . Women wear dark clothes and a kerchief held in place with a band of folded cloth. Red is usually worn by married women while blue is worn by unmarried women. Loose cloaks, or thobe , are worn for special events. These often feature embroidery around the neckline, sleeves and hems. Veils are often connected to a turban and are decorated with silver coins. Everyday clothes are much plainer. Bedouin women usually wear sandals. Some Bedouin women wear a burqua , a mask-like veil that reveals only the eyes and neck and has a narrow ridge that runs down the middle of the face. For a woman wearing such a garment only immediate relatives are allowed to see her face. Bedouin women in Saudi Arabia wear a black tent-like cloak over their clothes and a mask that covers the entire faces except for small eyes slits. In the desert most Bedouin women don't wear veils because they are is simply too hot. They don them when strangers appear.