Leather upper features Dri-LEX® lining,a steel shank and a dual density polyurethane outsole.Features Poron® Permafresh shock absorbing cushioned insoles with anti-bacterial protection.Electrical hazard tested to withstand applications of 14,400 volts at 60hz for one minute without leakage.DRYZ® technology,an innovative insole system that absorbs moisture and converts it into a dry gel within the insole of the shoe. As a result,the insole absorbs the moisture from perspiration throughout the day,yet remains dry to the touch.Additional InfoPORON®DefinitionsOutsole,Polyurethane,Insole,Upper