Blue Whistle - Referee, Coach, or Safety Signal Tool #3422411 (License: Personal Use)

This is a bright royal blue plastic whistle featuring a traditional two-tone design with a flat mouthpiece and resonant chamber. It includes a gray metal ball chain for convenient lanyard attachment, ensuring it stays accessible during active use. The whistle is rendered in clean vector style with subtle shading for depth, set against a transparent checkerboard background.

Commonly used on sports websites, coaching resources, safety equipment pages, or e-commerce listings for athletic gear. Matches user intent for purchasing, identifying, or learning about signal whistles.