To use this Vietri Contessa stemless wine glass, simply pour your favorite wine into it. It's perfect for sipping wine at home or during a small gathering. When it comes to cleaning, hand washing is recommended. Use warm, soapy water and a soft sponge to gently clean the glass. Avoid using abrasive materials as they might scratch the glass. Store it in a safe place, away from other hard objects to prevent chipping. With proper care, this hand - crafted Italian glass will last you a long time.