If you’ve ever ridden your bike on a busy city street you know those bells just don’t cut through the noise when you’re trying to alert people that you’re heading their way. Collaborating with famous whistle manufacturer Acme Whistles, Bookman has launched The Bookman Bike Whistle to up your safety game when you’re riding those city streets.

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Using whistle technology based on Acme’s Tornado whistle, this modern Bike Whistle is engineered with the principle of wave interference – which means it will produce a super high-pitched, high-volume sound without any moving parts.

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Wear the sleek whistle around your neck at all times, but don’t worry, in case you fall, the nylon neckband comes with a break free knot. Available in black, red, or white.

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