Blundstone Unisex #2056 All-Terrain Boots - Rustic BrownAll Terrain #2056 in Rustic Brown features a unique Vibram sole for grip on snow, mud and muck, and quick release of those materials as you walk The new tread design has a higher ratio of surface contact for increased stability and grip on uneven terrain Self cleaning outsole design proprietary to Blundstone Excellent grip on wet, muddy and slippery surfaces Vibram TC4+ technology sole Premium weatherproof leather Vibram thermo urethane outsole