STURDY CONSTRUCTION: This pool buoy is made of high-density ABS plastic, and the safety rope is made of nylon or steel wire for your choice. The surface is smooth and comfortable to touch. You don't have to worry about scratching your fingers. It is stable and sturdy, not easy to deform, tear or break, and can be used for a long time BUOYANCY STABLE & STAY SAFE The use of this swimming pool lane line can separate the lanes and avoid collisions between swimmers, thereby improving safety. The buoy absorbs the energy of water waves and plays a role in wave breaking and wave blocking. Our swimming pool lane markers can help swimmers maintain the correct swimming direction and allow athletes to obtain a good competition environment HIGH VISIBILITY & EASY TO IDENTIFY The buoy is brightly colored and easy to spot in the water, allowing you to clearly distinguish between the deep and shallow ends of the pool and the lanes. Use this safety rope and buoy as a safety marker to protect your safety while swimming POOLS DIVIDER ROPE: 1m/3.3ft safety buoy line has 5 buoys, each buoy length: 20cm (7.8in), width: 9cm (3.5in). Number of pool buoys: 1m-18m (3.3ft-59ft). You can also freely adjust the length of the safety rope or the number of buoys according to your needs. With accessories, customizable length WIDE RANGE OF APPLICATIONS: Pool safety buoy lines are ideal for demarcating dangerous areas or swimming lanes and are mainly used in indoor and outdoor swimming pools, inland waterways, waterways, shallow water areas, obstacles, ice surfaces, fishing sites, landscape pools