This winter do away with the traditional blankets and opt for the Electric Blankets. These are hand-washable, liquid spill proof and come with TEFLON insulation. Electric blankets are just like normal blanket with an integrated grid of thin, insulated heating element underneath to generate heat internally and use adjustable thermostats to control temperature.
The special blanket also relieves pain and reduces health problems such as allergies and sinus. This can run on invertors and charging points in railway coaches and sleeper buses. Can be ordered at CuddledUp.com