Rubber construction, waterproof leather upper, Lace-up boot, DiamondNet insulation for wind-resistant protection with a lightweight feel, B-Tek Lite proprietary aero-insulation blend that allows the inner boot to achieve greater thermal regulation while using less material, Form-fitting B-Tek Foam lining for comfort and PolyNylon blend used as an outer layer for lightweight and breathable liner durability, 12" shaft, Thermawick comfortable, hi-wick next-to-foot lining material for greater breathability and improved thermal regulation, Superlite Blend compound shell for a lightweight performance fit, LiteGrip Blend base for lightweight cushioning and grip, Polar Rubber lug outsole for maximized grip and longevity of boot at cold temperatures,