100% waterproof and breathable GORE-TEX extended comfort lining. Thinsulate Ultra 400G insulation. Danner TERRA FORCE X platform for control and torsional rigidity. Space frame webbing for support while eliminating weight. Durable, waterproof rough-out full grain leather. Tear resistant 1000 Denier nylon upper. Cushioning polyurethane footbed. Vibram Rivot TFX outsole for traction in rugged environments.