The tallest of Bugaboot Plus line, this super-warm boot features 600g insulation, thermal-reflective liners and is rated at -65F/-54C. And yes, they're totally waterproof. Your feet will never know what miserably wet and bitter-cold days are all about. Boots with combination of leather, nylon, webbing and metal hardware upper, Techlite Shell, Omni-Heat reflective lining, 600g insluation, Techlite midsole and Omni-Grip non-marking rubber outsole. Material: Nylon, rubber.