Muck Boot Woody Max Rubber Insulated Men's Hunting Boot Rubber Rubber sole Shaft measures approximately 15" from arch 5 mm neoprene provides comfort and flexibility, along with excellent waterproofing, shock absorption and heat retention properties; adjusts to the shape of your feet to resist blisters and chafing Stretch-fit Comfort Topline snugs calf to seal in warmth while keeping cold and debris out; high-grade extended rubber exterior provides additional waterproof barrier and extra toughness Fleece lining is soft, durable and provides exceptional warmth in frigid environments; 2 mm of thermal foam under footbed; comfort rated from -40 F to 40 F (-40C to 4C) High-grade rubber exterior provides extra toughness and makes for a 100% waterproof hunting boot; EVA contoured, molded midsole for lightweight cushioning MS-1 molded outsole is rugged, aggressive and durable for maximum protection and stability; rear pull loop for easy on/off