UL listed - meets OSHA requirements for outdoor use America's premier extension cord, Polar/Solar Plus is lightweight and stays flexible to -67 degrees F. Its rugged T Prene insulation provides superior resistance to abrasion, ozone, oil, grease and chemicals. Outer jacket is flame retardant and water resistant. Features a power indicator light in the female receptacle to show that the power is on. Made in the U.S.A.