Thank you for viewing. This is a Hawaiian jewelry fish hook bone necklace, exclusive to Hawaii. Material: Top: Water buffalo bone Cord: Hemp cord Size: Top: Approximately 5cm (length) Approximately 3.5cm (width) Approximately 6mm (thickness) Cord length: Approximately 70cm (maximum) Adjustable with an adjuster Since it is new, the hemp cord is not yet broken in. There are creases. The cord will become more supple after sliding the adjuster a few times.