The official whistle of all major sports officials. 

• 115 Decibels of high pitch shrill rises above ambient noise-can be heard up to a mile away
• 100% constructed of high-impact ABS plastic.
• 100% impervious to moisture
• Pealess Design. No moving parts-nothing to obstruct sound, nothing to jam, break or freeze
• First Choice of: WFTDA, MRDA, JRDA, NFL, NCAA, NBA, CFL FIBA, and FIFA
• Fox 40 cannot be overblown-the harder you blow, the louder the sound