These Sir and Madam tall glasses are perfect for any beverage. To use them, simply fill them with your favorite drink and enjoy. When it comes to cleaning, you can wash them by hand or in the dishwasher. Just make sure to handle them gently as they're made of glass. For long - term use, store them in a safe place where they won't get knocked over. If you're not satisfied with the glasses, you can return them within 30 days as per our return policy.