The insulated 1106 Sawtooth GTX RR is the most rugged late-season hunting boot ever developed by Zamberlan and the most capable hunting boot available in the market today. Built on Zamberlan's latest and most robust outsole, the Zamberlan Vibram® StarTrek II lays a foundation of excellence throughout the boot. The Sawtooth is ideal for late-season, cold weather hunting where warmth, ultimate comfort, and rugged durability are absolutely required.