Brown Sorel Joan of Arctic Snow Boots. Featuring waterproof suede, a seam-sealed waterproof design, and a rubber sole for grip—it's not hard to see why it's considered a winter essential. UPPER: A waterproof suede upper with faux fur cuff Seam-sealed waterproof construction. INSULATION: Removable 6 mm washable recycled felt inner boot. MIDSOLE: 2.5 mm bonded felt frost plug. OUTSOLE: Handcrafted waterproof vulcanized rubber shell with herringbone outsole.