LEVI'S Ribcage Boot. - size 30 (also in 26) LEVI'S Ribcage Boot. - size 30 (also in 26) 99% cotton 1% elastane. Light fading and distressed detail. Button fly. 5-pocket design. 16 at the knee breaks to 18 at the leg opening. Imported. LEIV-WJ169. 36934-0001. 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.