A telnyashka (Russian: тельняшка, pronounced [tʲɪlʲˈnʲaʂkə]) or telnik (тельник) is a type of undershirt worn with military uniforms of the Russian Armed Forces. They traditionally feature blue and white horizontal stripes, and can come in varying thicknesses and may be sleeved or sleeveless. Other variations of telnyashka with different colour schemes have been adopted based on a unit's affiliation.
Telnyashkas originated in the Imperial Russian Navy and spread from the Soviet Navy to the other branches of the Soviet Armed Forces. They have become a cultural icon of both Russia and the Soviet Union, especially their militaries, and are widely featured in popular culture.
