This dock ladder is made of aluminum alloy frame, ensuring security, stability, and better corrosion resistance. The flexible design allows it to be turned up and fixed when not in use, leaving the water surface to avoid seaweed twining and seawater corrosion. The ladder contains 18x4 inches 4-step large pedals with nonslip rubber pads, allowing you to get up and down the ladder comfortably and securely. It is widely used in docks, sea boarding, swimming pools, etc.