Traditionally, women wear an abaya [a long robe or cloak that covers the whole body] over their everyday clothing. As for men, they can wear anything from the traditional thobe [a long-sleeved, gownlike garment] to jeans and a T-shirt. In 2019, Saudi introduced the “Public Decency Law,” which explains what does and does not count as good attire in public for ladies and gentlemen. Basically, loose-fitting clothing that covers to the elbow and below the ankle is recommended for both men and women in public.
In general, it is not mandatory to wear an abaya or hijab [head covering]. However, you should dress modestly. [Refer to the Kingdom of Saudi Arabia’s Public Decorum Charter for more information.]
— By Didi Gluck