16" Boots with Vibram® outsole for durability and XpressCool™ lining that keeps feet cool and dry in warm weather. Features 4 mm CR flex-foam bootie with 4-way stretch nylon, steel toe for impact protection, steel shank for additional arch support, and etc® sock liner to reduce friction and heat buildup. Upper is triple reinforced in the toe area and quadruple reinforced in the heel area. 100% Waterproof, lightweight and flexible. Meets ASTM F2413-11 M I/75 C/75 EH.