Rocky Sport Utility 600G Waterproof Insulated Boots Built for cold, wet conditions, this rugged 8-inch outdoor boot combines waterproof protection, insulation, and dependable traction. The durable full-grain leather and nylon upper features a secure lace-up closure, while Guaranteed Rocky® Waterproof construction helps keep moisture out. With 600 grams of 3M™ Thinsulate™ Ultra Insulation, it provides added warmth when temperatures drop, and a standard cushioned footbed supports comfortable wear. The PU and rubber Sport Utility outsole delivers traction and stable footing, while the round non-safety toe keeps the fit comfortable and versatile.