In the survival bandana, we go over how to signal for help with a whistle. You may be able to yell at around 85 decibels but your voice doesn’t carry very well outside, making a whistle an important tool when trying to signal for help. Survival Tip : As loud as whistles are, the sound can travel for up to a mile depending on your geography and time of day. Whistles can be very loud, between 104 to 116 decibels, so we don’t recommend trying this in the house if others are inside (unless you want them to see the cool stuff in your new pack we wouldn't blame you). Both zipper pulls have whistles attached and there is also a whistle on the clip of the chest strap, so you don’t have to take off the pack to use it.
As you zip up the front pocket, notice the zipper pull is a small emergency whistle.
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