Durable and long-lasting: Our pre-assembled safety ropes are made of high-quality nylon and steel wire materials, and the buoys are made of ABS plastic, ensuring long-lasting performance and reliability. They are strong and durable to withstand the rigors of pool use. High-visibility design: The 8 pool buoys have high-visibility colors and are clearly visible even from a distance. This ensures that the pool safety rope is clearly visible to swimmers, reminding them of the boundaries and helping to prevent collisions or unauthorized entry into the pool restricted area. Product parameters: 1m/3.3ft safety buoy line has 8 buoys, each buoy size: ? 8 cm x 12.5 cm (3.1 inches x 4.9 inches). Number of pool buoys: 8/meter. You can also freely adjust the length of the safety rope or the number of buoys as needed. Easy to install and maintain: Our pool lane marking system is adjustable in length, simple to install, and easy to set up and maintain. Indoor and outdoor use: Use our pool lane marking systems in indoor and outdoor pools, including public pools, schools and residential areas.