Welcome to Alpha Technology. Ideal in the chemical, fish, food, pharmacy, and safety industries these lightweight 100% waterproof rubber boots are long-wearing and amazingly comfortable. The fiberglass shank is tough yet lightweight and the 3.5mm neoprene insulates. An oil/slip-resistant outsole like the Chevron keeps you ready for traction on most surfaces while the upper resists multiple industry chemicals (tested with ASTM F 903 method.) And additionally, the warm, soft fleece lining manages moisture away and helps make this rubber boot a lightweight comfort, letting you focus on work.