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. Comfort Rating: -10° to 40° F 200g Insulation 6" Nylon/leather upper Vibram® dual density outsole with IceTrek® outsole ASTM composite safety toe Waterproof VitaComfort® anti-fatigue and gravity-fed moisture management system Electrical hazard compliant Women's Black Widow™ Boot