The Emergency Life Buoy features high-density solid foam filling with abrasion-resistant Oxford cloth covering, specifically designed for river emergency rescue. Three specifications with outer diameters 52cm/60cm/72cm, inner diameters 27cm/35cm/44cm, providing buoyancy of 8kg/15kg/18kg, suitable for individuals weighing 25-90kg. Ultra-lightweight design weighing only 0.21-0.43kg for rapid response by rescue personnel. Blue-white, orange-white, red-white, and camouflage color options with high-visibility design for easy identification in complex water environments. Suitable for river rescue, flash flood response, reservoir discharge and other emergency scenarios, providing efficient rescue support for water conservancy departments, emergency management, and professional rescue teams.