To use this mug, simply pour your hot or cold drink into it and watch the design change. It's great for coffee, tea, or any other beverage. When it comes to cleaning, always use hand - wash only. Don't put it in the dishwasher as it may damage the heat - sensitive design. After washing, dry it with a soft cloth. Keep it in a safe place away from sharp objects to avoid scratches. This mug will add a touch of James Bond style to your daily drink time.