Description:Item color: As the picture showsItem Material: Sole: Rubber Upper: Space LayerItem size: Size: 6.5-7: The inner diameter is about 9.06-9.25inch The error is about 0.2inch 7.5-8.5: Inside Diameter is about 9.45-9.65inch The error is about 0.2inch 9-9.5: Inside Diameter is about 9.84 - 10.04inch The error is about 0.2inch 10-10.5: The inner diameter is about 10.24-10.43inch The error is about 0.2inch 11-11.5: The inner diameter is about 10.63-10.83inch The error is about 0.2inchFeature: Convenience: Smooth neck design prevents chafing when wearing our water shoes. It is convenient to wear and take off.After using,you can fold it easily Various Size Available: Some are designing multiple versions to fit different feet.Men and women size are available.Enjoy the cute and cool water shoes!