Materials：sterling silver. Craftsmanship：Italian Craftsmanship. Inclusions：925 sterling silver 5mm cuban link chain necklace，silver polishing cloth. Ideal Gift：This 925 sterling silver cuban link chain is a perfect choice for both mens sterling silver chain and womens sterling silver chain, making it an ideal gift expression. After-sales: This 925 sterling silver cuban link chain comes with a one-year warranty. If you encounter any issues with this sterling silver chain, please contact us.