Sienna Tri HoopThe Sienna Tri Hoop is a versatile earring measuring 1 inch in length and 8. 0 mm in width designed for a balance of subtlety and statement. These hoops are tarnish resistant, often made from sterling silver or stainless steel with 18k gold plating, and suitable for both everyday and formal wear. They are also hypoallergenic and water resistant, meaning they can be worn swimming, showering, or working out.