Blundstone 1478 The Winter Chelsea in Rustic Black. A winterized Blundstone boot for total comfort in the coldest months. 100% wool fleece footbed, Thinsulate™ lining, 100% waterproof—even the elastics! Our Rustic Black is a softer look but still takes a beating like all Blundstone boots.Premium waterproof leather.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.Extra set of footbeds.Leather lined.