Last time I looked at the stats,  hypothermia was still the No 1 killer 'out there'.  In all but the most minimal kits I carry shelter, and the latest is the ultralightweight 'space blanket', designed to radiate the body's heat back,  can be opened up via velcro tabs, is washable, and packs down to a small pocket size. It is US made, more foldable than the earlier space blankets. If you have a pocket you can carry this item.  Can't remember the brand,  but I can supply it if anyone is interested and can't find a similar blanket.  <br>Cheers, PeterR
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"Serve in Love; live by Faith"