Muck’s match for extreme winter conditions. Lightweight and flexible 5mm CR flex-foam booties with four-way-stretch nylon seal out water. A layer of 2mm thermal foam underlay in the instep areas increases warmth. Stretch-fit topline bindings snug to your calves to keep warmth in and cold out. EVA molded midsoles with contoured footbeds add support and cushioning. Double reinforcements on the instep, heel and achilles areas and reinforced toe with wrap-up toe bumpers enhance protection. Breathable Airmesh™ linings wick away perspiration. Removable 6mm Nitracel™ EVA insoles add support and slipper-soft molded comfort in the footbeds. Wide-cut heel bases for stability. MS-1 molded outsoles are rugged, aggressive and durable for maximum protection and stability. Hands-free easy on and off. Comfort range of -40°F to 60°F. Imported. Men’s sizes: 5-15. Color: Black.