The Etna travel mug serves you a hot coffee when you struggle to stay awake at work, or an ice-cold drink after a tough workout. When you’re on your way from one activity to the next, it will not only keep your drink hot for 5 hours (300 ml) or 9 hours (500 ml) and cold for 11 hours (300 ml) or 18 hours (500 ml), but also prevent it from leaking.