Irish Setter MudTrek rubber boots are the lightest rubber boots in the brand’s history, and they’re among the lightest on the market today. MudTrek boots are made to fit. Features TempSense technology helps regulate the temperature within the boots. In hot conditions, the system reacts so moisture is hyper-wicked away from the foot, facilitating evaporative cooling. This helps keep feet cooler, drier and more comfortable. In colder conditions, the system also pulls moisture from the skin, but traps it to create a thermal barrier that helps maintain a constant, comfortable temperature inside the boots.