For me ..it's the sleeping bag.
I've had many discussions/read dozens of articles etc. on the subject of so-called wilderness survival and the necessary equipment, and yet, rarely if ever is a sleeping bag mentioned. The sleeping bag in many cases seems to have been relegated to "camping gear" only and is not readily considered "survival" gear for what ever reason. I guess using a sleeping bag in a true survival situation is somehow cheating. For me, I'll cheat every chance I get ( .. guess I'm a whimp).
Obviously it's the extra wt. and bulk that people don't want to deal with unless they're camping, but when you consider the wt./ heat retention ratio of a well designed sleeping bag, you can't beat it for saving your ass from slow, hypothermic death.
Developing the skills to build a proper shelter and keep a fire going long enough to be rescued or repeat-ability for a multi day walk out is something we all should strive for, but if you suffer a mechanical injury(crash landing?) whilst in the hinterlands, even with a simple sprained wrist or ankle(let alone broken/ dislocated bones) life gets tough real fast. That shelter and fire might just be out of reach of your present abilities, regardless of your skill sets. And considering some of the country that is flown over in winter, there may not be materials available to build with or burn for heat, regardless of whether you're injured or not.
Having a bag to crawl into and cocoon up for multiple days and still be alive when the S&R guys show up makes for good style as well as brownie points with the family. The trick is to have it with you, and the ability to get it out of the wreckage before potential fire turns it into a plastic ball of goo.



