Fun and Engaging: This sinker set of 4 Underwater Swimming Pool Diving Discs is designed to make swimming and diving training more enjoyable for children. Training: These diving discs are not just toys, but also a great tool for improving your child's diving skills and underwater confidence. Material: Diving training toys made from durable plastic, these discs are built to last, ensuring endless hours of fun in the pool. Size: Fun swimming toys with a diameter of 10cm, these discs are the great size for small hands to grab and throw, making them suitable for children of all ages. Package Includes: Each swim tools comes with a set of 4 diving discs, providing good value for money. Specification: Material: Plastic Size Chart: Diameter 10cm/3.94inch Package Includes: 4 diving discs Note: Please allow slightly errors due to manual measurement and different monitors. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia