Design: Waterproof suede upper and gusset tongue for help you stay dry Sealed seams to lock-out moisture D-ring lacing system for secure closure Weight: 3.2 lbs per pair Height: 8.5" In-Shoe Comfort: 8mm Zylex(R) insole for enhanced warmth and protection in tough conditions Insulated with 200 g or 200B 3M(TM) Thinsulate(TM) and foam for premium warmth Padding on collar for additional cushioning Durability & Traction: Waterproof synthetic rubber shell for durable, yet flexible wear Snowtread outsole with deep lugs to help you keep your footing Additional Details: Best suited in conditions down to -40 degF