All metal components are made of color zinc galvanized steel material, which is more corrosion-resistant. The chest strap, shoulder strap, and cross strap can be adjusted according to user needs, conforming to human curves, comfortable to wear, and not hindering work activities. The buckle design makes it quick and easy to wear and remove, with a wide range of adjustments to adapt to different body types. Multi connection point design to meet various needs such as fall prevention, positioning, and rescue.