The TerraFlex II is an update to the best-selling TerraFlex with a more abrasion-resistant and water-resistant upper - without sacrificing the traction, secure fit and all-day comfort that people love about the TerraFlex. Whether you're running, hiking or just taking a walk off the beaten path, the TerraFlex II helps you feel more connected to the ground beneath your feet. The rugged 6.5 mm FeelTrue sole with 4mm lugs for reliable traction provides the perfect combination of protection and ground feel for all off-road activities. The embedded 3 mm TrailFoam layer provides extra comfort and protection, and the toe cap protects against unexpected bumps that hit you on your way.