I have 3 cabinets of failed coffee travel mugs. It is safe to say this one will never make it there. I am head over heels in love with this mug. I tested this mug for the 16 hours it was suppose to stay cold and 19 hours later I still had Ice. Everyone should own a contigo mug. I purchased mine at Target and on clerence. I will make more contigo purchases in the near future.