“In a “blind whistle test” 4 out of 5 instructors said they felt the Tri-Power whistle was louder and indicated a true feeling that there was an emergency which needed responding to. We also sent it our extended wilderness courses on the river, ocean, and mountain environments. Instructors specifically noted it was easier to hear as a whistle signal while descending rapids. As one of our safety protocols, students wear a whistle at all times during wilderness trips and I’m proud to say that this summer the Signal #1 Tri-Power whistle is our whistle of choice.”

– Michael Crowtz – Program & Technical Director