DryShod MOBU MAX Men's Cold-Conditions Hunting Boots. This boot was designed for extreme cold conditions with these additional features; 6 layers of protection plus EVA cold-blocking midsole = 7 layers, 5.5 mm bootie 2.5 mm DENSOPRENE XD foam (extreme density) for extra protection, 2 mm airmesh, 2 mm warm fleece lining = 11 mm of insulating warmth and protection! Double Achilles heel and instep reinforcement for comfort and protection and nylon shank. Comfort range -50°F to 65°F. DENSOPRENE foam and 4-way stretch lining that will stretch-fit to virtually any calf and is easy on/easy off. Height 16”-17”.