50-Foot 12/3 Green Cold Weather Extension Cord with Power & Ground Check Lights - Your Name on Cord This cold weather cord is fully safety compliant with all the latest features. New space age cold weather insulation and jacketing compounds guarantee this cord will remain flexible in temperatures well below freezing. Molded-on heavy duty unbreakable, weatherproof standard 3-prong lighted U/Ground connectors Molded, heavy duty ground check connector and power check plug UL Listed and cUL Approved.