Breakthrough design and development allowed Irish Setter to craft RPM composite material that’s comfortable, wears like iron, and significantly reduces the weight of the boot. Strategically designed for uneven terrain and abrasive conditions, the RPM outsole can be found on the VaprTrek™ family of boots in both Big Game and Outdoor categories of hunting footwear. The RPM sole features a bi-directional lug pattern for increased traction and balance during heel strike and toe off. The wrap-around instep provides protection and aids in gripping tree stand rungs or ATV foot pegs.