Design: 16 Inches of 100% waterproof vulcanized rubber construction Reinforced heel counter provides performance heel and ankle fit Adjustable top gusset Slip-on comfort with enhanced heel-kick for easy, hands-free removal In-Shoe Comfort: 8mm of ultra-warm neoprene with cozy fleece lining for reliable warmth in cold conditions Shock-absorbing EVA midsole increases support and stability Durability & Traction: OmniTrax(R) Interchangeable Sole System for traction on the fly Easily change soles as conditions or terrains demand Additional Details: Comfort rated down to -60degF Height: 16" Weight: 5 lbs. 4 oz. (per pair)