I never get cold when I ride as long as I use my heated jacket liner. It makes my Aerostich riding suit totally warm down to freezing temperatures. I don't ride if there might be ice. The riding suit is not insulated and I use it all summer.
I'm using a Generation 3 heated jacket liner from: Warm & Safe
Variable control heat with a blue tooth wireless remote controller. I can control heated gloves and a jacket liner separately. Just put the remote unit with the control knobs in any pocket or Velcro it to the bike somewhere. The heat controller goes in a pocket in the jacket liner.
I'm using a Generation 3 heated jacket liner from: Warm & Safe
Variable control heat with a blue tooth wireless remote controller. I can control heated gloves and a jacket liner separately. Just put the remote unit with the control knobs in any pocket or Velcro it to the bike somewhere. The heat controller goes in a pocket in the jacket liner.