The Danner Quarry 8 Inch Waterproof Insulated Work Boot. Durable, waterproof full grain-leather upper. 400 grams of Thinsulate Insulation. Triple stitched. waterproof and breathable Gore-Tex lining. Cushioning Fatigue Fighter footbed with memory foam insert. Fiberglass shank. Handcrafted stitchdown construction. slip-resistant Vibram Quarry outsole. Electrical Hazard protection ASTM F2891-11 EH. Recraftable.