The Windstorm® is considered the second loudest whistle on the market (the Storm® Whistle below being considered the loudest). Tests show that the Windstorm® whistle produces a sound which is more easily heard when compared to other popular whistles. This whistle performs in all conditions, in any weather or safety situation. On land, it can be heard up to 1/2 mile, and underwater, up to 50 feet. A high-impact, non-corroding thermoplastic protective housing is easy to grasp, and the patented double chamber, allows it to be blown when held right side up or upside down, forcing all water to be purged when the whistle is blown. Measures 2-3/4" long x 1-1/2" wide x 7/8" thick. Available in Orange & Black.