Bahrain and Saudi Arabia are linked by the 25 km long King Fahd Causeway. There are 6 checkpoints on the customs island and it may take between one to two hours to cross borders.
Saudi Arabian dress strictly follows the principles of hijab (the Islamic principle of modesty). The predominantly loose and flowing, but covering, garments are suited to Saudi Arabia's desert climate. Traditionally, men usually wear an ankle length shirt woven from wool or cotton (known as a thobe), with a keffiyeh (a large checkered square of cotton held in place by a cord coil) or a ghutra (a plain white square made of finer cotton, also held in place by a cord coil known as an agal) worn on the head. Women are expected to wear an abaya when in public.
Expatriate men are not required to wear Arabic clothing, but are advised to avoid wearing shorts/ short trousers in public places. All women are required to wear an abaya in public places. Within compounds dress is not restricted.