The Slim Rescue Howler weighs only a few grams but it packs a big punch namely, a 100 decibel signal that is audible from over a mile away. The pea-less design means this whistle works in all conditions and will never jam or freeze. Be heard: 100dB whistle signal is audible over 1 mile. Fail-safe: pea-less design works in all conditions - won't freeze or stick to lips when cold.. Take it everywhere: ultra-portable design weighs only a few grams and fits in any pocket, or attach it to a zipper pull.. Dimensions: 2.25 in. x .0875 in.. Weight: .2 oz.. Includes 2 whistles.
