XTRATUF Ice Nylon Ankle Deck Boots were developed after extensive field work navigating the most brutal winters Alaska has to offer. Each pair is totally waterproof, yet allows high-activity feet to breathe naturally. Glacier Trek Pro outsole finds a sure grip on both icy cold and slippery wet surfaces. Finally, synthetic TUFloft insulation quickly sheds water and retains core foot temperatures for comfort in conditions down to -20AdegF. Stay warm, dry, and comfortable no matter what your next winter has in store. High-abrasion-resistant nylon uppers Breathable TUFdry waterproof membrane Comfort rated to -20AdegF TUFloft hydrophobic synthetic insulation retains heat, dries fast Synthetic shearling lining for comfort Glacier Trek Pro ice-gripping outsole with SRC-rated slip-resistant rubber Synthetic shearling lining for comfort