Promotional Dopper Travel Mug (400ml) Morning caffeination, midday hydration, or an evening sparkling sensation. This Dopper Travel Mug is up for anything and ready to go anywhere. It keeps hot drinks steamy, cold drinks cool, and sparkling drinks fizzy. No leaks. No fuss. No extra weight. And definitely no single-use waste. Features an easy-to-open flip cap, keeps drinks hot for up to 6 hours and cold for up to 20 hours. Made from double-walled stainless steel with 90% recycled content, finished with a durable powder coating. Dishwasher safe (without print) up to 65 °C. Some staining or odor may occur with tea or coffee. Use caution with hot liquids.