This is interesting its a system which pre-warms your pyjamas. The product is made by the same company that invented the wearable electric blanket. The satin pouch heats the garments to 47C within ten minutes so that they are nice and warm when you put them on. It can also be used for other clothing such as gloves, hats and socks. I’m not sure if I would use it but it’s an interesting idea.