Anbu uniform.
Most Anbu predominately wear some kind of mask to conceal their identities. Konoha Anbu predominantly wear animal-styled porcelain masks, with some opting for more menacing looking creatures. In the anime, Anbu from Hoshigakure is seen using similar masks. Kiri Anbu wear masks with slits for eye-holes and the village's symbol printed on the forehead; these may or may not have patterns on them as well. Suna Anbu seem to wear pieces of cloth that resemble turbans to cover the lower-halves of their faces leaving only their eyes visible. In the anime, similar pieces of cloth were worn by shinobi from Takigakure. In the anime, Suna-nin were depicted wearing porcelain masks as well, modelled to resemble oni. Similar masks were worn by a regiment of Anbu from the Land of Wood known as the Prajñā Group.
They also have standard uniforms which, for Konoha Anbu, consist of black clothing, a grey flak jacket, metal arm guards and gloves, ninja sandals with spikes for travelling into mountainous regions, three ninja pouches on their back-waist and a signature spiral tattoo on their shoulder. Some Konoha Anbu wear black cloaks over their standard uniforms, and squad leaders may wear white cloaks. Most of them carry a sword, which is usually strapped to their backs.