Fly Fishing, Winter Emergency Bug Out Bag. Nymph Fishing or Dry Fly Fishing

It's winter, it's freezing cold, you are and hour and a half from home and you just fell in the river. You now are wet freezing cold and a long way from home. A winter bug out bag is an emergency life saver for those anglers who make that plunge and are soaked. What is in the bag and how can it save...