FOX 40 SONIK WHISTLE
The most efficient whistle in its class
Ideal for all level roller derby referees and coaches, Fox 40 SONIK whistle special feature is a cushioned thermoplastic mouth grip that provides extra grip and protection for teeth. It also has 2 chambers pealess designed to self-clear when submerged in water.
Easy to blow, it creates a loud, distinct and clear sound (120db) that will be heard up by everyone on and around the track !
Be ready to Blast !
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