The LifeStraw Echo Whistle is a versatile, compact survival tool designed for outdoor enthusiasts and emergency preparedness. It combines a water filter and a signaling whistle in one lightweight unit. The filter removes bacteria, parasites, and microplastics, providing safe drinking water from various sources. The whistle is designed for high visibility and can be heard from a distance, making it an essential item for signaling in emergencies. With its durable construction and portability, the LifeStraw Echo Whistle is an ideal companion for camping, hiking, and adventure activities.