18 OZ. Corship Travel Mug is made from premium stainless steel materials and is designed to last. Double-wall insulated stainless steel design remains cool to the touch and helps keep drinks hotter for longer. Vacuum-sealed insulation and created a tumbler with a unique shape that’s sleek and comfortable to carry. Features a leakproof, flip-top cap that completely covers the mouthpiece when closed, keeping the area your lips touch when drinking much more hygienic. Perfect household gift for your family and friends. Not microwave or dishwasher safe, imprint drinkware only can be hand wash. BPA FREE, FDA certified