<br>The ACR whistle (http://www.acrelectronics.com/ww3.htm) is<br>worth a look for pocket carry. It's quite small and loud. I have<br>one for the pocket or PFD zipper pull.<br><br>... off in search of smaller and lighter things...<br><br>

If you find anything smaller and lighter, please clue me in. I've got so much crammed into my trouser pockets, my pants are falling down. It's quite sad, really. Grin.<br><br>

>>If you find anything smaller and lighter, please clue me in.<<<br><br>I’ll second that, and expand it to anything, not just whistles. Over the decades I’ve become near-fanatic about the weight and bulk of carry items. The larger and heavier, the less likely you’ll have it when you need it, period. It’s just too tempting to leave a kit (or anything else) behind “just this once” because it’s gotten too heavy, and you don’t really “think” you’ll need it.<br><br>I like the ACR, and it seems that I have three, though I don’t really remember buying that many.. I have an old ‘60s Cracker Jack whistle that is as loud or louder than the ACR, flatter, lighter, not as sturdy, but requires a lot less breath than any of the typical survival whistles- a factor that I think could be very important, but is seldom mentioned. I also have some similar toy whistles, with similar faults and virtues, that I got from Barry Schuchart at Blue Line Outfitters.<br><br><br><br><br>