The Fox 40 Classic Fingergrip Whistle is for referees and coaches at all levels who want every call to be heard.

Features: 

• Adjustable fingergrip that fits securely and comfortably over group of fingers
• No moving parts to freeze, jam or deteriorate
• Flawless, consistent and reliable
• The harder you blow, the louder the sound
• Will be heard above ambient noise and loud crowds
• Sound will be heard up to a mile away