Blundstone 584 Winter Thermal Chelsea in Rustic Brown, waterproof winter comfort with fleece and Thinsulate™. Waterproof elastics, too. All-day comfort for long winter walks. F Fully waterproof boot with waterproof elastic and latexed seams Lined with 200 grams of Thinsulate insulation Thermo-urethane outsole resistant to hydrolysis and microbial attack Polyurethane midsole for comfort XRD™ in the heel strike zone to dissipate heel strike shock. Removable sheepskin footbed for warmth and comfort. XRD™ in the heel pad S Premium waterproof leather Leather lined 200 grams of Thinsulate insulation Unisex Blundstone sizing Extra set of footbeds Features a pre-distressed leather that can vary in appearance Boot may be lighter or darker than those pictured here