As a result, SPR leather resists caustic alkali, sulphuric acid, calcium hydroxide, potassium phosphate, caustic potash and barnyard acids. Every new material or component is thoroughly researched and tested before it is incorporated into Durango boots. This includes steel toes for maximum protection from falling objects, heavy duty steel shanks for extra protection and Carbo-Tec outsoles for superior wear characteristics in abrasion, chemical, heat and slip resistance and flexability. Durango has also added, for strength, their triple-tanned SPR leather and, for comfort, breathable Cambrelle linings. There are three classifications of each according to test results.
Prices are subject to change.