My neck is frozen
The nape and neck are the spot where wind gets straight under your clothes, between the hat and the jacket collar. A heated scarf and a heated neck warmer close that gap and warm exactly where the body chills with every gust. They are soft, comfortable and go with any outfit, so you wear them every day as readily as on winter outings.
You power both from your own power bank, tucked into the product's pocket, so the heating time depends only on its capacity. You wear the heated scarf on the outside like a classic scarf, for a walk and the commute, and you put the neck warmer on under a jacket when you ride a bicycle or motorcycle or work in the wind.