This necklace uses 2mm diameter domestic round leather cord. You can use it by threading your favorite pendant top, etc. (The part to thread through needs to be about 3mm in size.) The basic specifications are: Leather color: Natural Metal fittings color: Gold Metal fittings type: Small plate clasp Length: 40cm The above are the basic specifications, but changes are possible upon request. If you wish to make changes, please see below and let us know after purchase. If we do not hear from you, we will create the item according to the above specifications. ・Length can be changed up to 50cm. This is the length including the metal fittings. If you choose the adjuster type, the length can be adjusted by about 5cm. For lengths of 51cm or more, an additional 100 yen will be added for every 10cm, so please comment before purchasing. We will adjust the price. ・Choose the leather cord color from black, dark brown, natural, or brown, and the metal fitting color from silver, gold, or antique. The color of the leather cord may vary slightly depending on the time of arrival and the environment in which you view it. Black and dark brown are similar colors. ・Choose the metal fitting type from adjuster, small plate clasp, or large plate clasp. If you would like to purchase multiple items or add length, please let us know in the comments before purchasing. We will adjust the price. Please feel free to contact us if you have any questions. We do not offer discounts. Material: Leather Color: Beige Material: Genuine leather