I have Extrasport Osprey that I started using 4 years ago. It is designed for kayak fishing.  Because of the pockets and d rings etc I use it as my ditch kit.  It ships with a whistle. It stays in  my truck for the same reason. If your survival gear is in it you may tend to wear it. If you don't wear it and you get wet at least you can swim to your life jacket which is floating. Nothing is better than wearing it of course.

Sierra Trading post has them on sale for 60.00 I paid 99.00 for mine and my sons 4 years ago.

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