Part of the waterproof Thermal Series are the blundstone # 566 boots with smooth black leather upper. They were developed to protect your feet from weather conditions. The latex seams engage with the treated upper, while the water-repellent elbows seal the whole. Removable sheepskin inserts and the leather lining also ensure warm and dry feet and comfort. This boat was developed to actively keep you in cold weather. Article number # 566 Gender Unisex Color Voltan Black Upper Premium Leather Water Resistant Mounting Type Pull-On Food Material Leather and Textile with ThinsulateInsulation Insole Sheepskin Footbed Series Thermal Series Sole Unit Classic Sohlen Material TPU outsole with PU midsole and PLC impact protection system Removable insole Half sizes are no longer, but the clock is a little higher for better entry.