Title: Will leak under airplane pressurized environment
Review: I am a frequent flyer and noticed this product leaks under airplane pressurized environment and in my gym bag.Otherwise great product but I believe Thermos is built better . I have tried different generic store brands and Contigo but none of them can compete with Thermos products. I would not waste my money on this mug. Buy Thermos you will not be disappointed or buy this mug at Costco it is much cheaper.
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