Safety whistles are small, portable devices designed to produce a loud sound when blown. They are commonly made from plastic or metal and are often used in emergency situations to attract attention or signal for help. The sound produced by a safety whistle can carry over long distances, making it an effective tool for outdoor activities like hiking, camping, or boating. Many safety whistles are lightweight and can be easily attached to keychains, backpacks, or life jackets. They are often used by lifeguards, search and rescue teams, and outdoor enthusiasts to enhance safety in various environments.