LEVI'S Ribcage Short in Blue. - size 31 (also in 23, 24, 25, 26, 27, 28, 29, 30) LEVI'S Ribcage Short in Blue. - size 31 (also in 23, 24, 25, 26, 27, 28, 29, 30) 99% cotton 1% elastane. Button fly. 5-pocket styling. Light whiskering and distressed detail throughout. Frayed hem. Shorts measure approx 12 in length. Imported. LEIV-WF55. 77879-0008. 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.