St John Ambulance F06154 Thermal Blanket for Adults - 2.15m x 1.5m Emergency First Aid & Camping Blanket - Retains Body Heat for First Responders, Outdoor Survival & Home Use

An essential for any first aid kit, especially if you live or intend to travel to cold regions. Even if you're not first aid qualified or own a kit, it's easily slipped into a large coat pocket or the glove compartment, and you literally use it like a blanket.Whilst I've never been under this myself, I have had to use it for an emergency situation on someone who broke their leg in the freezing cold. It did a much better job than a sweatshirt ever could and was able to cover their entire body. Just remember to either weigh down the corners or tuck it under their body, as it can get blown off (not a fault of the product itself, just the material).