| RefrigiWear Extreme Freezer Boot HVL | Waterproof | Multicolor | Ragg Wool/Leather | 7. RefrigiWear Boots | Comfort Rating: -45°FAnti-slip outsoleASTM/CSA composite safety toe When Old Man Winter is at his worst and the temperature falls below zero, call on the insulated Extreme Freezer Boot to get the job done. Whether you need work gear for getting it done outside in winter or in temps that feel like winter all year round, the Extreme Freezer Boots will keep you on your feet. Built with added warmth and safety in mind, you'll stay comfortable in temps down to -45°F. Puncture resistant... - RefrigiWear Extreme Freezer Boot HVL | Waterproof | Multicolor | Ragg Wool/Leather | 7. |