Built with heavy duty 18/8 food grain stainless steel, this timeless vacuum insulated stainless steel bottle transcends functionality with its patented 360 Magnetic Lid Port™ technology. The Aurora™ is designed to be a leak proof coffee mug with a Double Stop™ magnetic flip lid with twice the sealing power. The wide mouth design is easy to clean and fill. Plus, by sticking the magnetic lid to a spot on the stainless band you'll avoid placing your lid on a dirty surface while you're filling up. Keeps your beverage hot or cold for hours!