The Arctic Pro allows the hunter to focus on what's important. This boot's 8mm neoprene and fleece lining assures warmth in low temperatures. Like most Muck boots, a topline binding keeps the snow and cold out. - 100% Waterproof - Featuring RealTREE Edge Camouflage - 8mm Neoprene Bootie for Comfort and Performance - Warm Fleece Lining - Bob-Tracker . Outsole - Comfort range - (-60F_-30F) - Shaft Circumference: 17in - Boot Height: 17. 56in - 5. 4 pds.