Specification:Item Type: Dive RingsMaterial: PlasticProduct Color: Orange / Yellow / Blue / GreenInner Diameter: Approx. 113mm / 4.4inProduct Weight: Approx. 210g / 7.4ozPackage List:4 x Dive Rings Note:1. It is not recommended for children under 6 years of age to use it alone. If it is used, it needs to be carried out under the supervision of an adult.2. Please allow 1‑2cm error due to manual measurement. Thanks for your understanding.3. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.