100% waterproof construction repels all moisture to keep feet dry - High abrasion Neo-Tech upper and flexible rubber for all-day comfort - Soft fleece lining with Max Wick and Durafresh coating for all-day comfort - Internal steel shank for maximum support and stability - BioBased Rebound insole for comfort energy return and odor control - GlacialGrip outsole is purpose built for frigid temperatures and icy conditions - Do-it-all tread with a 90 heel-built for everyday activities and occasional slick surfaces - Comfort range from -30F to 70F (-34C to 21C) for cold-weather warmth and three-season wearability