Lifesystems Hurricane Whistle bis_hidden Is your seat designed to

Is your seat designed to fit your rear end perfectly

Permits easy changeovers of hands and tools

Works on single and half ropes

If you are unsure if your unit is possibly defective

Lifesystems Hurricane Whistle bis_hidden Is your seat designed toOne loud mountain whistle. Overview One of the loudest whistles available, the Lifesystems Hurricane performs in all weather conditions. It can be heard in all directions and further away than other whistles. Weight: 15 grams Features 122dB loudness Tri tone sound Floats on water Neck lanyard and attachment clip Technical Specs Weight: 15 grams Dimensions (packed): 13 x 63 x 23 mm