The Rutmaster 2.0 Rubber Hunting Boot boasts Irish Setters exclusive ExoFlex technology, which expands to accommodate the back of your foot. Once youre in, it contracts for a lock-tight, high-performance fit that provides toe spring and agility in every stride. Breakthrough RPM composite technology significantly reduces the weight of the boot for stability, strength, and comfort - without all the extra weight. The vulcanized rubber and 3.5mm neoprene upper is printed in a Realtree Xtra camouflage pattern for maximum stealth in the field. Ultra Dry construction combines a moisture-wicking lining with waterproof components for dry, long-lasting comfort and performance. A Scent Ban treatment in the lining helps control odors by killing odor-causing bacteria, so feet stay fresher longer. Cement construction provides maximum flexibility and comfort, while the removable polyuretha.