I've slept on the ocean beaches in Washington a few times with just this blanket and in the winter it works as advertised, it's not the best fit but it works which is why it does It's a so-called ambulance blanket will help, if you're buying for your car, make sure you get at least one that fits your body length, if not double, so you can tuck it in and attach it to your legs and head for maximum Achieve heat if you know how to use it. A word for those who have only used flimsy disposable space blankets, they can be dangerous in the winter as they do little to trap winter body heat like they're supposed to, so it's worth the extra small cost that they're yours Can save lives and very good for heat reflector when sleeping on cold floor.
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