The Frogg Toggs Ridge Buster Rubber Boots offer -40 degree protection in a design that is 30% lighter than comparable boots. The Ridge Buster is 100% waterproof and has a single seamless shell design. The 5mm neoprene uppers feature a 4-Way stretch for maximum comfort and warmth. Features100% waterproof constructionCold protection to -40 degrees FSingle seamless shell design30% lighter than comparable bootsDurable and flexible design4-Way Stretch 5mm Neoprene uppersSlip-resistant traction rubber outsoles