8 MILLIMETERS OF ULTRA-WARM, WATERPROOF, WEATHER-READY NEOPRENE TO COMBAT THE WORLD'S COLDEST REGIONS.. VERSATILE TRACTION: OmniTrax® Interchangeable Sole System for traction on the fly; easily change soles as conditions or terrains demand. WATERPROOF: 16 Inches of 100% waterproof vulcanized rubber construction keeps feet bone dry. INSULATION: 8mm of ultra-warm neoprene...