LEVI'S Twisted Back Tank in White. - size S (also in ) LEVI'S Twisted Back Tank in White. - size S (also in ) 100% cotton. Back twist detail. LEIV-WS12. 39188 0000. Levi Strauss & Co., established in 1853, is a brand with a loyal, worldwide following. Their innovation with the co-invention of the blue jean was an integral part in creating their culture of self-expression and American cool that still resonates today. Each ready-to-wear design produced by the iconic label is made with special attention to craftsmanship, progress, and sustainability.