High-performance rubber boot with insulation and ExoFlex® technology for a lock-tight fit. The RPM™ technology is a composite material that significantly reduces the weight of the boots. It is engineered to provide the durability and strength of traditional materials without the extra weight. Offers best-in-class insulation designed for repeated compression and durability over time. Coupled with a permanent water-repellent treatment with high-density construction, this insulation keeps feet warm in dry or wet conditions. ExoFlex® technology allows the boots to expand to accommodate the back of your foot. And then once you’re in, it contracts for a lock-tight, high-performance fit that provides toe spring and agility in every stride. With an Irish Setter™ exclusive scent control process, ScentBan™ is added to various materials from leathers to lining to foot beds, killing bacteria that cause odours.