This one-of-a-kind necklace is made of what would normally be considered 'scrap' material! The chain is leftover from another project, and the colourful rainbow tags are the holes that are punched from our supplier's large aluminum scales. One size fits most adults! This is a very dainty chain and is not suitable for small children - we wouldn't recommend this for anyone under 13/14. Closes in the back with a lobster claw clasp.