RefrigiWear Men's Extreme Hiker Waterproof Insulated Freezer Boots with Boa Fit System (Black, Size 10 US)

WARM: Comfort Rated down to -40F thanks to 1000g of Thinsulate Ultra insulation. PERFECT FIT: The Boa Fit System gives you a snug, lasting fit that wont come undone. Make adjustments without removing your gloves. COMFORTABLE: Features RefrigiWears exclusive VitaComfort system. WATERPROOF: Dont worry about damp conditions thanks to HYDRY waterproofing system. SAFE: Protect your feet and yourself with ASTM composite toe and electrical hazard compliance.