Blundstone #584 Winter Thermal in Rustic Brown, brings winter comfort with warm fleece and Thinsulate™ lining. Waterproof leather and sealed seams, too. All-day comfort for long winter walks. Unisex Blundstone sizing. Features Premium waterproof leather*. Tight-knit coated elastics and sealed seams. Lined with 200 grams of ThinsulateTM insulation. Leather lined. Removable sheepskin footbed for warmth and comfort. Durable TPU outsole. SPS Max Comfort system to reduce 90% of the impact as you walk. *Leathers referred to as waterproof are routinely tested for resistance to water penetration up to 12,000 / 15,000 flexes using one of the following SATRA test methods: TM171 using SATRA STM703 Bally penetrometer (or equivalent) or TM34 using SATRA STM606D Maeser type WR tester (or equivalent).