Description All the standard MUCK BOOT(TM) features plus: Stretch-fit topline binding snugs to calf to keep warmth in and cold out 5mm CR flex-foam bootie with four-way stretch nylon, 100% waterproof, lightweight and flexible Extended rubber overlay for added protection Additional achilles overlay for added protection 2mm thermal foam underlay added to the instep area for additional warmth Added toe protection with a wrap-up bumper EVA molded midsole with contoured footbed (internal) MS-1 molded outsole is rugged, aggressive and durable for maximum protection and stability Comfort range of -20°F to 70°F Write a Review No reviews yet.