Small and powerful, the SLIM RESCUE HOWLER WHISTLE (2 PACK) from Sol, the American survival equipment specialist, holds the record for compactness in terms of survival whistles.
Supplied in packs of 2, this model has a sound power of 110 dB that easily pierces surrounding noise. It is audible from more than 1.5 km away. Its red colour makes it easy to spot, while its construction makes it virtually unbreakable. What's more, it operates without a ball and in all climates for even greater reliability.
High-performance and powerful yetlightweight and compact, this whistle is easy to attachto a bag or clothing zip.