12-Inch Pull-On Broad Square Steel Toe boot. Steel toe meets ASTM F2413-11 standards. Tempered steel shank provides protection and support for the arch. Work Trak outsole is oil-, heat- and slip resistant with excellent cushioning and flexibility. Oil resistant rubber and cork 5/8'' heel cap. Super-knit, moisture-wicking lining. Air Flow insole is breathable from heel-to-toe, anti-fungal and anti-bacterial. Welt construction helps lateral stability and durability. Secure leather pull straps and pull holes make pulling the boots on easy.