A durable and convenient mug for your travel! 13.5 oz. Tanze Travel Mugs are made of high-quality stainless steel that is powder coated with vibrant colors. They have a double wall vacuum insulation that keeps your drinks hot for up to 4 hours and cold for up to 6 hours. The transparent charcoal push lid lets you see how much drink you have left and has a secure seal that prevents spills and leaks. Come with a comfortable handle that makes them easy to hold and carry. Perfect companion for your travels, work, school, or home. Imprint drinkware only can be handwash. Rush 3 days available with rush charge upon request. BPA FREE, FDA certified