Our Best Selling Bella Hoops • Available in sizes 18mm, 14mm, 12mm • Base Material: High Quality Solid 925 Sterling Silver • Finish: 18K Gold or Platinum • Measurements: Outer Diameter - 18mm (14.5mm inner), 14mm (10.5mm inner), 12mm (8.5mm inner). • Nickel Free and Lead Free • Hypoallergenic, Made for Sensitive Skin