Cool | Whistle

on PicClick (like the ceramic beer mug whistle mentioned).

Since you didn't specify a particular brand (like a Fox 40, ACME, or a survival whistle), I am going to assume you are looking for a review of the —generally referring to modern, pea-less, high-performance safety whistles used for sports, hiking, and survival. cool whistle

These are excellent for personal defense. A blast of 115db directly into an attacker's ears is disorienting and painful, providing a second of distraction to escape. on PicClick (like the ceramic beer mug whistle mentioned)

Many people wear artistic or high-end metal whistles as necklaces. or a survival whistle)