Barista thermo coffee mug is doubled-walled vacuum insulated, which keeps your favorite beverage hot for 4 hours and cold for 12 hours. The lid design of our thermal coffee mug is designed perfectly to avoid burning yourself and there’s no space for milk or coffee or whatever you’re drinking to dry up and collect in. • Material: Stainless Steel • Capacity: 350 ML • Leak Proof • Easy to clean