I've owned and used a "Black Jack" electric vest (made by Electrowear in Errington, near Parksville BC) for 3 years, but when the temps fell and I started using it this autumn, the heat output was most unimpressive, not at all what I remembered. broken wires? loosened connections? who knows??? so I phoned and was told they can do repairs, and that there was a flat rate $20 fee, including postage back. sounded reasonable, so I dropped the package off at my local post office at 1pm Weds. mid-day the following Monday, the vest arrived back, restored to toasty perfection. the billing slip shows 15 mins of inspection, 15 mins of sewing, 2 lead wires replaced, and 4 connectors replaced. plus bench testing. plus mailing back. mighty impressive for 20 bucks, and mighty fast too, I reckon! kudos to all concerned!