This 45cm RAKUWA neck made of Aqua-Titanium is perfect as a health accessory. - Model Name: RAKUWA Neck - Brand: Phiten - Size: 45 cm - Color: Green Navy Thank you for viewing. This is a re-listing to correct the size and color of a previously listed item. I apologize to those who liked the previous listing. The product itself is unused, but due to package deterioration, lack of a seal, and being opened, it is relisted as "like new." Please understand and confirm before purchasing.