This super-warm boot features 200g insulation, thermal-reflective liners and is rated at -25F/-32C.  FEATURES: Combination of leather, nylon, webbing and metal hardware Techlite® shell Waterproof seam-sealed construction Omni-Heat® reflective lining 200g insulation Rated -25F/-32C Techlite® lightweight midsole for long lasting comfort, superior cushioning, and high energy return Omni-Grip® non-marking traction rubber outsole Weight: size 9, ½ pair = 23.2 oz / 660 g MATERIALS: UPPER: Combination of leather, nylon, webbing and metal hardware SHELL: Techlite® LINING: Omni-Heat® reflective INSULATION: 200g MIDSOLE: Techlite® OUTSOLE: Omni-Grip® non-marking traction rubber Omni-Heat® Reflective: Thermal Reflective Warmth  Omni-Tech®Waterproof. Breathable. Guaranteed. Techlite®: Cushioning midsole  OMNI-GRIP®: Advanced Traction