100% waterproof construction repels all moisture to keep feet dry - 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 - Semi-aggressive do-it-all tread with a 90 heel-built for light work and mixed terrain - Comfort range from -58F to 40F (-50C to 4C) for cold-weather warmth and two- - season wearability