| RefrigiWear Women's Black Widow™ Boot | Waterproof | Lightweight | Ragg Wool/Leather/Nylon | 6. RefrigiWear Boots | Comfort Rating: -10° to 40° F Waterproof ASTM composite safety toe Designed specifically for women, the Black Widow™ lightweight work boots for women offer protection in below-freezing environments down to -10°F. The anti-slip outsole on this waterproof work boot keeps you safe in a range of conditions. Our exclusive VitaComfort® system fights fatigue and injury, plus manages moisture to keep your feet dry and comfortable in the Women's Black Widow™ leather work boot.... - RefrigiWear Women's Black Widow™ Boot | Waterproof | Lightweight | Ragg Wool/Leather/Nylon | 6. |