Originally Posted By: Medicineball
How much does the air horn weigh? I'd be hesitant to bring it, because I don't trust pressurized things to stay pressurized. I do agree with others, however, about a whistle. Worth the ounce and always works.


It's very light and takes up very little space. It's also very easy to operate (push the red top/horn piece) onto the white cannister piece.
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