| RefrigiWear Frostline® Hiker Boot | Waterproof | Lightweight | Black | Ragg Wool/Leather/Nylon | 9.5. RefrigiWear Boots | Comfort Rating: -15°F to 35°FAnti-Slip RefrigiWear® outsoleASTM Composite safety toe Get safety and style in one hard working boot. This waterproof Frostline® Hiker Boot is ready for your hard day. The Frostline® Hiker Boot is a freezer boot that won't crack under the pressure or from the cold. With protection down to -15°F, winter temps will feel like a summer day. When workers aren't weighed down, they accomplish amazing things. With Frostline® Collection, you get incredibly... - RefrigiWear Frostline® Hiker Boot | Waterproof | Lightweight | Black | Ragg Wool/Leather/Nylon | 9.5. |