This 16 oz. Stainless Steel, Double Wall, Vacuum Insulated, Leak Proof Travel Tumbler is amazing. It features true 360-degree drinking and has a thin lip to mimic drinking from a cup. The unique quarter-twist closure cannot come open inadvertently and it absolutely prevents leaking. The double-wall vacuum insulation keeps hot drinks hot for up to 8 hours, and cold drinks cold for at least 12. It's leak-proof, sweat-proof, and unbreakable. With a capacity of 16 ounces, it will hold more than enough coffee to get you to the office.... and it will still be amazingly hot. The I Have a Bean "eye-con" is laser etched into the steel so it won't come off over time or in the dishwasher. This is the last tumbler you'll ever need to buy.