Magnum Original Ultimate performance & durability is delivered by an upper consisting of ballistic Nylon & natural leather, with a comfortable suede collar It has a high traction oil resistant carbon rubber sole for extreme grip, with an EVA wedge for additional underfoot comfort together with a steel shank for torsional rigidity to maintain the foot position whilst walking Comfort is never compromised with a removable contoured insole & the Cambrelle lining which keeps the foot dry & cool, & prevents bacteria build-up The Magnum Original Sidezip boot has been tested & certified to European Standard EN 20347 with SRA slip resistance Upper Material Leather/ Textile, Midsole Material Textile, Sole Material Other