The Back40 Boot redefines tall boot performance from pre-season prep to late-season sits. From the top of the upper to the bottom of the outsole, this boot is engineered with all-day comfort in every facet of the design. 800 grams of Thinsulate™ insulation regulates temperature throughout the hunts and tasks you traverse. The fully waterproof construction, additional rubber overlays, and a rubber outsole with multi-surface traction create the epitome of dependable durability