The ml Summituria 350ml Tritan Ml Camp Mug camp mug has double wall vacuum insulation, keeping drinks hot for 1. 5 Hours or cold for 3 hours. The secure press fit Tritan lid prevents splashes so you can easily sip your beverage in the kitchen, in the office, or when relaxing by the campfire. Dishwasher safe. Fits most coffee makers/machines.