This is a GUCCI bangle. I believe this is a very valuable item, featuring the popular lion motif designed by Alessandro Michele, combined with the Gucci logo. I purchased it at the Aoyama store, but I kept it carefully and never wore it, so it's been stored as new and unused. It is definitely authentic, but it does not come with a box or shopping bag. It doesn't open, so you put it on by sliding your hand through the hole of the bangle. I've forgotten the material, but it's not metal. However, it's not plastic either. Inner diameter: 18.5cm Thank you.