| RefrigiWear EnduraMax™ Boot | Waterproof | Lightweight | Black | Ragg Wool/Leather | 8. RefrigiWear Boots | Comfort Rating: -10°F to 40°FVibram® New Bifida with IceTrek® outsoleASTM composite safety toe Stay light on your feet while crushing your day with EnduraMax™, a lightweight work boot that stops the chill in its tracks. Comfortable for everyday wear, EnduraMax™ brings comfort and relief to tired, fatigued feet with built-in moisture management and shock absorption. A waterproof work boot with a hiker profile, EnduraMax™ offers protection in below-freezing temperatures.... - RefrigiWear EnduraMax™ Boot | Waterproof | Lightweight | Black | Ragg Wool/Leather | 8. |