Cup Holders (2 Blue & 2 Pink), Suitable for Pool Frames with an Outer Diameter of 5cm Double Support Points for Stable Suspension, Hollow Bottom for Easy Drainage ABS Plastic is Impact-Resistant, Smooth, Burr-Free and Aging-Resistant Tool-Free Installation, Stackable to Save Space Suitable for Frame Pools, Bathtubs, Inflatable Pools and Other Swimming Pools Practical Set Configuration: Includes 4 pool cup holders (2 blue & 2 pink) to meet the needs of multiple people. The size is 13.58.56.5cm, suitable for cylindrical frame pools with an outer diameter of 5cm, which is an ideal choice for storing drinks, mobile phones and other items while swimming. Innovative and Stable Design: It adopts a double support point structure, both up and down, and hangs outside the pool without shaking, effectively preventing items from falling into the pool. The hollow bottom design accelerates drainage, keeps the cup holder dry, and is both practical and aesthetic. Durable and safe material: Made of high-quality ABS plastic, it is impact-resistant, aging-resistant, and does not fade or deform easily. The surface is smooth and burr-free, and the rounded edges prevent scratches on the skin, making it safe and suitable for long-term use. Easy installation and storage: It can be hung directly on the pool railing without tools, and the installation is quick and easy. It can be stacked and stored when not in use, which does not take up too much space and is convenient for daily storage and transport. Multi-scenario application: It is not only suitable for outdoor frame pools, but can also be used in bathtubs, inflatable pools, spas and other environments, allowing you to easily store items and enjoy a safe and comfortable time on the water.