Whistle Keychain with Coil Sometimes, people just need to stop and pay attention. And here's the inexpensive attention-grabber that will easily do the job. This durable plastic whistle comes with a metal split-ring and a soft, coiled wristband that fits most arms. It's available in a variety of bright colors and makes an ideal safety promotion. Nurses working the late shift and college students traveling from late night study sessions are just a couple examples of the kinds of users who'll benefit from such a practical giveaway.