This life jacket features a 200D thickened Oxford fabric outer layer with EPE pearl foam filling, providing 3.6kg powerful buoyancy specifically designed for maritime storms, typhoons, tsunamis, and extreme ocean rescue operations. The approximately 230g lightweight design doesn't restrict freedom of movement, while the 45x40x6cm ergonomic size fits various rescue personnel. High-visibility yellow with azure blue/bright yellow with vermilion striking colors and shoulder reflective strips enhance visibility in adverse maritime conditions, making it essential professional equipment for maritime rescue, fishery disaster prevention, and maritime emergency operations.