The Simms Challenger Insulated Boot is designed for the toughest winter conditions. Their vulcanized rubber exterior guarantees total protection against moisture, while the 7 mm neoprene insulation and checkered fleece lining provide exceptional warmth. The Simms Freestone outsole provides excellent grip on a variety of terrains and is compatible with Simms Hardbite, Cleats and Alumibite cleats. These boots feature a convenient rear buckle for easy donning and a total height of 14 inches for optimum protection over the calf. Perfect for long fishing sessions and outdoor adventures in cold, wet weather.