1.Strong and stable: The rope is made of nylon, the hook is made of stainless steel, and the buoy is made of PP plastic; it is not easy to deform, tear or break and can be used for a long time. 2.Easy to adjust: The buoys on the rope can be adjusted and moved; there is a holder inside the rope next to each buoy, and by adjusting the buoy, the buoy spacing can be adjusted. 3.Smooth surface: The surface of our buoys is smooth and pleasant to touch. Swimmers do not have to worry about cuts when touching the buoys in the water, which provides a good guarantee. 4.Versatile: It can not only distinguish between dark and shallow areas to prevent accidents, but can also be used to create swimming lanes so you can swim with peace of mind.