This is a surgical stainless steel bangle/bracelet used for medical purposes. I bought it online and it just arrived, but the size doesn't fit me. Size: Inner circumference: approximately 18cm Weight: Approximately 10.5g Material: Surgical stainless steel Color: Gold Quoted from the website: This bangle is made of skin-friendly surgical stainless steel, which is resistant to water and can be used with relative peace of mind even by those with metal allergies. It has a simple design that is easy to use for both casual and formal occasions, and it brings out the charm of adults. It is also recommended to layer it with your other bracelets!