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