Features: Replaces water ice cubes to maintain the perfect undiluted and cold taste of your beverage. Specially designed for whiskey, wine and juice, providing the perfect temperature recommended by the beverage labels. Keeps drinks cold and chilled for an extended period, the stone edges are rounded, preventing scratching. Made of safe material, the whiskey stones are odorless and non-toxic while are wear-resistant and impact-resistant. Any problem, please contact our store without hesitation. Honor to serve you!