FEATURES of the Danner Sierra GTX Boot 100% Waterproof, breathable Gore-Tex lining for the final word in comfy, breathable waterproof safety 200 grams of Thinsulate? insulation supply light-weight heat for these needing safety in chilly climates Full-grain leather-based and Cordura higher supplies are extraordinarily proof against abrasions, tears and scuffs. Cordura improves breathability and dries shortly Vibram 1276 Sierra outsole includes a particular design and placement of the multi-directional lugs for max traction and stability over varied terrains, together with moist and chilly circumstances Fiberglass shank