The ACME Thunderer whistle, which is ideal as a referees whistle, has a waterproof speed pea which works in rainstorm conditions.
The whistle has a large square mouthpiece with deep tone.
It's easy blow gives an instant response, perfect for petulant players! Who uses the Acme Thunderer Whistles The Acme Thunderer whistle is used by NFL, Olympic and FIFA officials and in many other top class sports competitions.
The ACME Thunderer whistle is also Lead Free.
Size 58 1/2 big
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