This water patrol life jacket is made of high-quality 400D Oxford fabric with a bright red design and high-visibility reflective strips, ensuring clear visibility on water surfaces. The built-in safety whistle can emit warning sounds over 100 decibels in emergency situations to attract attention. Internal EPE buoyancy material provides 100N standard buoyancy, supporting adults to float safely. Suitable for flood patrol, embankment inspection, and water monitoring, it's essential equipment for water safety patrol personnel.