This high performance boot keeps feet cool and dry with our exclusive XPRESSCOOL™ lining for all day comfort, while the Vibram® outsole offers durability and traction for multiple surfaces. This Steel Toe version meets ASTM F2413-18 M/I/C EH. 100% Waterproof, 100% MUCKPROOF 4mm Neoprene Bootie for Comfort and Performance ASTM F2413-11 MI/75 C/75 EH Rugged Spandura upper for durability The Vibram® Traction Lug outsole delivers increased traction and a larger surface area for improved grip, propulsion, and braking power. Triple Toe and Quadruple Rubber Heel Reinforcement XpressCool™: Anti-microbial Evaporative Cooling Lining